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The Peculiar Math That Could Underlie the Laws of Nature (quantamagazine.org)

xanthos writes: A fascinating article in Quanta magazine introduces us to Cohl Furey and the eight dimensional mathematics called octonions that she is using to model the interactions of strong and electromagnetic forces.

"Proof surfaced in 1898 that the reals, complex numbers, quaternions and octonions are the only kinds of numbers that can be added, subtracted, multiplied and divided. The first three of these "division algebras" would soon lay the mathematical foundation for 20th-century physics, with real numbers appearing ubiquitously, complex numbers providing the math of quantum mechanics, and quaternions underlying Albert Einstein's special theory of relativity. This has led many researchers to wonder about the last and least-understood division algebra. Might the octonions hold secrets of the universe?"

"In her most recent published paper she consolidated several findings to construct the full Standard Model symmetry group for a single generation of particles, with the math producing the correct array of electric charges and other attributes for an electron, neutrino, three up quarks, three down quarks and their anti-particles. The math also suggests a reason why electric charge is quantized in discrete units -- essentially, because whole numbers are."

130 of 242 comments (clear)

  1. quanternions for SR? by iggymanz · · Score: 3, Informative

    nah, normally 4 vectors are used which are NOT quaternions. Not seeing what advantage their use would give over four-vectors since they wouldn't represent space-time but rather space and operations in space.

    1. Re:quanternions for SR? by lgw · · Score: 2

      nah, normally 4 vectors are used which are NOT quaternions.

      You're thinking of General Relativity, not Quantum Mechanics. QM math is all about matrices of complex numbers..

      Quaternions and and matrices are somewhat annoying, as they're not commutative. Octonions are neither commutative nor distributive, which makes them harder still to work with.

      --
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    2. Re:quanternions for SR? by iggymanz · · Score: 1

      wasn't thinking of QM at all but Special Relativity which uses 4 vectors.

    3. Re:quanternions for SR? by BitterOak · · Score: 5, Interesting

      True, ordinary quaternions aren't that useful for describing spacetime but biquaternions give a very natural and elegant way to model the space-time of special relativity. In particular, Maxwell's equations can be written as one simple equation which is manifestly covariant. Lorentz transformations in this algebra have the matrix representation SL(2,C), the set of complex 2x2 matrices with determinant one which is the covering group of the 4x4 matrix algebra representing proper, orthochronous Lorentz transformations. In a sense, biquaternions are to Lorentz transformations in special relativity what quaternions are to rotations in three dimensional Euclidean space.

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    4. Re:quanternions for SR? by drakaan · · Score: 1

      ok, and I don't know the math well enough to feel I can speak intelligently, but...doesn't the whole article talk about octonions being the area of investigation. Which would not be quaternions, right?

      --
      "Murphy was an optimist" - O'Toole's commentary on Murphy's Law
    5. Re: quanternions for SR? by Anonymous Coward · · Score: 2, Interesting

      Yep. Special Relativity only needs a standard 4-element vector s = [x,y,z,ct]. Quaternions multiply differently. Decades ago I used quaternions to represent rotations and orientations of 3D objects in 3-space. At one time they were popular for keeping track of a satellite's incremental changes in rotation over time. They are simpler to use and renormalize than 3x3 rotation matrices. They can also be represented as sparse 4x4 matrices, which eliminates all the weird quirks of three kinds of imaginary nests or whatever it is that's weird about quaternions.

    6. Re:quanternions for SR? by MrMr · · Score: 2

      I clicked on the link. Gave me the impression 'natural', 'elagant' and 'simple' may mean something different where you live.

    7. Re:quanternions for SR? by iggymanz · · Score: 1

      more broadly GR deals with accelerations and uses 4-tensors instead of the 4-vectors of SR.... and we still don't need quaternions

    8. Re:quanternions for SR? by rtb61 · · Score: 1

      Things just get weird when you try to take free floating energy out of the system. No particle to contain the energy, there is no energy. It is all discrete particle flows and the energy contained within those particles, both the inherent energy of the particle and the transient energy as it transfers from particle to particle, balancing out. The infinitely small particles of quantum space (relative to normal space) and infinite large particles as the universe itself could be considered an individual particle (relative to the multiverse).

      --
      Chaos - everything, everywhere, everywhen
    9. Re:quanternions for SR? by ceoyoyo · · Score: 1

      The article describes using real numbers (obviously), complex numbers (also fairly trivial), quaternions AND octonions. That's what the RxCxQxO thing is about.

    10. Re:quanternions for SR? by BitterOak · · Score: 1

      They then go on to say that "In Furey’s model, the symmetries associated with how particles move and rotate in space-time, together known as the Lorentz group, arise from the quaternionic CxH part of the algebra."

      I'm no expert, but from the Wikipedia page it sounds like the biquaternions are that CxH part. (That is, they're quaternions where each "value" is actually complex.)

      Yup. The biquaternions are indeed CxH. They can also be represented by 2x2 complex matrices where the basis vectors for the three spatial dimensions are represented by the three Pauli spin matrices and the basis vector the time dimension by the 2x2 identity matrix.

      --
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  2. Clueless editor about singularity by UnknownSoldier · · Score: 1, Informative

    Who ever put together that diagram about "Four Special Number Systems" was completely clueless about Mathematical Singularities

    When you add, subtract, multiply or divide the "real numbers" used in everyday life, you always get another real number

    *facepalm*

    NO, you do not. 0/0 is a singularity because it does NOT produce another real number. You get TWO numbers: +Infnity, and -Infinity and thus Mathematicians say the operation is "undefined".

    1. Re:Clueless editor about singularity by iggymanz · · Score: 4, Informative

      + and - infinity aren't numbers, and no they really don't solve the 0 / 0 problem. that quotient is just undefined for useful maths

    2. Re:Clueless editor about singularity by UnknownSoldier · · Score: 1

      Thanks for the catch! I knew I missing something.

      I should have put air quotes around: You get TWO "numbers:" to signal that infinities are concepts and not numbers -- despite that they tend to be treated like numbers.

      Thanks again!

    3. Re:Clueless editor about singularity by fisted · · Score: 3, Insightful

      It's almost as if the diagram targets scientifically curious laypeople, so your nerd rage about this irrelevant detail (given the context) is a bit over the top.

    4. Re:Clueless editor about singularity by dgatwood · · Score: 2

      And yet nobody has trouble with square roots being defined, even though sqrt(4) is +/- 2.

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    5. Re: Clueless editor about singularity by Tomahawk · · Score: 1

      That's probably true for all 4 named systems.

      However, the article is written at a level for most people to gain some understanding. Adding in the exceptions would just needless complicate the article, and take away from the points he's making.

    6. Re:Clueless editor about singularity by burtosis · · Score: 3, Funny

      And yet nobody has trouble with square roots being defined, even though sqrt(4) is +/- 2.

      I think if the square root is negative you are imagining things.

    7. Re:Clueless editor about singularity by UnknownSoldier · · Score: 1

      Except the _exceptions_ themselves ARE interesting.

      They could have easily added a minor foot note:

      You always (*) get another real number.
      (*) Except division by zero

      Likewise the Complex number is crap for omitting the detail that i represents a 90 degree counter clockwise rotation.

      The defining characteristics of i is that it represents a 90 degree CCW; thus its square is negative. i.e. i^2 = -1

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      You will not be able to ride dolphins that is animal cruelty.

      "Riding" digital pixels such as pig, horse, dolphin, in a video game is animal cruelty???
      *facepalm*

    8. Re: Clueless editor about singularity by Tomahawk · · Score: 4, Insightful

      If the square is negative you're imagining things. A square root being negative is just reality.

    9. Re:Clueless editor about singularity by Actually,+I+do+RTFA · · Score: 1

      The problem isn't an equation producing two results (although as a rule the number of solutions are equivalent to the order of the equation, so division or reals having two would be an issue.) The problem is "infinity" isn't a number. It's like saying 5 divided by 1 = red/green cabbage . I mean, it's nonsense, but not because it returns two types of cabbage.

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    10. Re:Clueless editor about singularity by johanw · · Score: 1

      0 / 0 can be anything. lim_{x->0} x/x = 1,lim_{x->0} x^2 / x = 0, lim_{x->0} x/x^2 = +/- infinity.

    11. Re:Clueless editor about singularity by sexconker · · Score: 1

      No, 0/0 doesn't produce ANYTHING. You cannot perform the operation. The original statement is correct.

      When you add, subtract, multiply or divide the "real numbers" used in everyday life, you always get another real number

      You cannot divide by 0. You literally cannot perform that operation. It's not a thing. Thus, there's never a case when the quoted statement is incorrect.

    12. Re:Clueless editor about singularity by Bitmanhome · · Score: 1

      Actually you don't get infinity, because 0*infinity is undefined. 0/0 is undefined because it "produces" all numbers (i.e. you can pick any number, and it'll work). You need to rebuild the problem as a limit to see if it converges to any particular number.

      Interestingly, 0*infinity is undefined for the same reason.

      --
      Not that this wasn't entirely predictable.
    13. Re:Clueless editor about singularity by james_gnz · · Score: 1

      No, 0/0 doesn't produce ANYTHING. You cannot perform the operation. The original statement is correct.

      It doesn't need to be a problem, as long as you're willing to allow partially-defined expressions. It's just not useful to do.

      As another poster has pointed out, we already accept the positive-or-negative square-root operator as producing a partially-defined expression. If we have A = B^2, then we have B = +-_/A (using ^2 for square and _/ for square root). If A = 4, then we have B = +-_/4, and B can be 2 or -2, so we can have 2 = +-_/4 and -2 = +-_/4. This would be a problem if we insist on +-_/4 being fully defined, since we would conclude 2 = -2, so we have a contradiction. If we allow +-_/4 to be partially defined, though, then can't conclude that 2 = -2, and we don't have a contradiction.

      Considering 0 / 0 as a partially-defined expression:

      Division is the inverse of multiplication. If we have A = B * C, then we have B = A / C (and C = A / B). If A and C are 0, then we have 0 = B * 0, and B = 0 / 0. B could be any number, so we can have 0 = 0 / 0, and 1 = 0 / 0, and so on. This is fine, as long as we're willing to accept 0 / 0 as partially defined, and don't conclude that 0 = 1. It's just not useful, since it doesn't tell us anything about B (besides the implication that it's some kind of number).

      This is different from 1 / 0 (or any other non-zero number divided by 0) which leads to a contradiction even if we allow partially-defined expressions. If we have A = B * C, and try A = 1 and C = 0, we get 1 = B * 0, and B = 1 / 0. But there is no number that satisfies this equation. The question contains an implied contradiction, even if we allow partially-defined expressions.

    14. Re:Clueless editor about singularity by mark-t · · Score: 1

      Actually, you don't get any number. Division by zero is entirely undefined and meaningless. It is only correct to say that the limit of division approaches plus or minus infinity as the divisor approaches zero. But the limit of a division by a number that approaches zero is not the same thing as division by zero. The former is actually defined, having two specific (non-numeric) values: +/- infinity. The latter is entirely undefined. It is about as meaningful (and no more correct) to say n/0 = +/- infnity as it is to say n/0 = red, or n/0 = hippopotamus.

    15. Re:Clueless editor about singularity by ceoyoyo · · Score: 1

      Mathematicians have the useful concept "almost everywhere" (https://en.wikipedia.org/wiki/Almost_everywhere) so they can talk about useful properties while remaining rigorous enough for the most determined pedants.

  3. Re:Meh by vux984 · · Score: 1, Funny

    "Can I have a Coke please."

  4. Re:Meh by Anonymous Coward · · Score: 1, Funny

    He invents fake news!

    Did I win anything?

  5. Comment removed by account_deleted · · Score: 1

    Comment removed based on user account deletion

  6. Re:Meh by Anonymous Coward · · Score: 1

    And this is why we can't have nice things. People say they want peace, but they do not. People want war and struggle. That is why a country can never have peace, If there are no external enemies they will make up internal enemies called Democrats and Republicans who will fight to the bitter end for good and right. Just remember these so called evil Trump supporters feel to their very heart that they are doing the right thing. They were just born in a different part of the country from your soo enlightened self.

    There are some more loft individuals that can find their struggle in understanding the beauty of the universe. Lets keep politics out of mathematics

  7. Re:Computer scientists by TomBauserman · · Score: 1

    No she says "and uh uhm yeah like he totally did understand it."

  8. Re:Sounds delicious by TomBauserman · · Score: 1

    Some fried mushrooms to.

  9. Re:Is there a PhD in the house? by Bob+the+Super+Hamste · · Score: 4, Funny

    I don't think the timecube guy was ever on slashdot.

    --
    Time to offend someone
  10. Bottom line.. by mnemotronic · · Score: 1

    Everything is connected in ways we can't even comprehend.

    --
    The Russians have won. They have made the world a cesspool of distrust, greed, fear and hate.
    1. Re:Bottom line.. by zlives · · Score: 1

      ... yet...

  11. Re:Feminist propaganda by Pfhorrest · · Score: 4, Funny

    Fuck women!

    Not with that attitude you won't.

    --
    -Forrest Cameranesi, Geek of all Trades
    "I am Sam. Sam I am. I do not like trolls, flames, or spam."
  12. Re:Meh by mnemotronic · · Score: 1

    ... Lets keep politics out of mathematics

    The endless struggle to keep politics out of "X" rides the same rails as the struggle to keep religion out of "Y".

    --
    The Russians have won. They have made the world a cesspool of distrust, greed, fear and hate.
  13. We only had half the story. by ScentCone · · Score: 1

    So, the only thing wrong with the Timecube was that it was only half the story. Timecube is dead. Long live Octotime.

    --
    Don't disappoint your bird dog. Go to the range.
    1. Re:We only had half the story. by raftpeople · · Score: 1

      Yes, it was the the wrong half.

  14. Another step in our understanding of Everything by mykepredko · · Score: 5, Insightful

    Great article and illustrates how as we try to understand reality (for lack of a better word): we first find that our current level of physics can't explain what we observe so we need to go to the next level. That next level needs the appropriate mathematical tools which often end up being already invented and looking for a practical application.

    From the perspective of using a branch of mathematics that is new to the field, there's a lot of similarity between this story and using mathematics to predict crime: https://science.slashdot.org/s...

    I believe we need to promote and retell these stories to students so that they can look beyond the simple and search for mathematical analogues that allow them to understand and model the physical world in different ways.

    1. Re:Another step in our understanding of Everything by DCFusor · · Score: 1

      Too bad mathematics has, after all this time, no feed-forward closed-form solution whatever to the N body gravitational problem.
      Much less one with charge (Coulomb) and strong force.
      Or for that matter, any recursive/fractal problem - weather is a simple example. You just have to perturb endlessly.
      We'd have fusion if they did.
      Now, trying to simulate a 10^20 something body problem as a particle in grid is heat death of the universe difficult.
      Math isn't the queen of all the science we need. It was just lucky for awhile.

      --
      Why guess when you can know? Measure!
    2. Re:Another step in our understanding of Everything by maestroX · · Score: 1

      You must be joking, it only proves die-hard mathematicians have not one step progressed towards women.

    3. Re:Another step in our understanding of Everything by zlives · · Score: 1

      again this would perhaps mean that we have been looking in the wrong place for the answer. that is what makes this story interesting to me, perhaps a lot of science energy has been wasted on colliders as answers when wee havn't yet gotten to the right math.

    4. Re:Another step in our understanding of Everything by DCFusor · · Score: 1
      We could wish they'd fund more than one approach, to be sure. There's no one "wrong place" and I suspect, more than one useful place to find clues. I have a friend at CERN and we've discussed their detector filtering algos - they need to do some reduction in data rates. The thing is, at some point in this process, it's easy to eliminate anything you weren't looking for anyway...and they know it. Technical limitations as much as anything, but also cognitive.
      .

      "Expect the unexpected" is harder to do than most people think - if for no other reason that there's quite a lot of it.
      I was just going off about math taking credit that isn't always deserved. Sometimes it is. Just not all of it.

      --
      Why guess when you can know? Measure!
    5. Re:Another step in our understanding of Everything by zlives · · Score: 1

      I always took an intuitive approach to physics, so a lot of current Physics/math is way to esoteric for me. Heck this octonion bit is way above my understanding... and that's when i want to understand it.
      it feels right... meh, i am not even qualified to make that statement but i always like the idea of an elegant universe.

      I do agree that yes both sides should be funded, i think our capacity to intuit is largely dependent on a basic understanding. if the basis is complex enough intuitive leaps can be made beyond. but without the basic development our imaginations are limited too.

  15. Re:Meh by Anonymous Coward · · Score: 1

    3.9% GDP growth in Q3 2014. Enough said you conservative hack.

  16. Can anybody dumb this down? by Anonymous Coward · · Score: 1

    Can any of you smart mathematicians and physicists possibly down-translate this for the rest of us?

    I'm sure I'm not alone in admitting I have not the slightest idea what the hell this is. OK, maybe I'm alone in admitting it, but I'm sure I'm not alone in having no idea what this is saying.

    1. Re: Can anybody dumb this down? by Tomahawk · · Score: 1

      Unfortunately I think it's already dumbed down. :-(
      I think the graphic about half way down does a great job of explaining the 4 systems, though. At least at a basic level.

    2. Re:Can anybody dumb this down? by suutar · · Score: 2

      The short form, I think, comes out to "we used somewhat complicated math to handle several things independently, but this even more complicated math handles it all together, which may help us predict more stuff."

    3. Re:Can anybody dumb this down? by Baloroth · · Score: 5, Informative

      There are 4 consistent sets of numbers that allow you to construct a mathematical system with addition/subtraction and multiplication/division. These are the real numbers, the complex numbers, the quaternions, and the octonions. These systems have 1,2,4, and 8 units, respectively (and are therefore intrinsically 1,2,4, and 8 "dimensional" systems). Each one gains and looses some nice properties that are useful in various circumstances. The reals are useful for things like finance or sheep counting, the complex for quantum mechanics, and quaternions for 3D vectors (like CGI graphics). In principle you can always use the reals, but other systems have properties that naturally make it easier to do certain things.

      Now, in physics there is something called the Standard Model (SM) that describes most of our understanding of particle physics: how they interact, how they're created and destroyed, and (almost all) their properties (there are a few exceptions, such as the neutrino mass, which is not included in the SM). The SM has been shown to be extremely accurate and predicts nearly every phenomenon that we see. There are a few things missing: notably, gravity is a completely separate model from the SM (not that they're opposed to each other, but no one's found a good way to integrate the two models together without running into mathematical absurdities).

      Now, the SM uses regular old complex numbers, and adds a lot of very complicated and fancy math on top in order to make it's predictions. It all works, but the math could maybe be made simpler or more elegant: right now, it requires adding several sets of complex numbers together, because the dimensionality of the model is higher than the 2 that complex numbers alone can perform. Since octonions are 8 dimensional, it may be possible to re-write the math of the SM into a form that uses octonions with fewer groups of numbers. This would kinda be cool, and could maybe make the math easier (or reveal certain properties of the model that weren't obvious before), but wouldn't really change the physics (because that's already fairly well understood and, as mentioned above, very accurate). So far, Cohl Furey has managed to do that for one set ("generation") of particles in the SM. Note that the math for a single generation is far easier than for multiple generations, so it remains to be seen if it can be extended to include the entire SM, but from a purely mathematical standpoint, it's kinda cool.

      --
      "None can love freedom heartily, but good men; the rest love not freedom, but license." --John Milton
  17. Re:cart before the horse? by Pfhorrest · · Score: 5, Insightful

    So... you're telling me that reality is defined by an abstract algebra concept?
    I thought we were using abstract algebras to *model reality*--not the other way around.

    Yes. Reality will be defined by some mathematical structure or another. We can invent mathematical structures to describe any possible way that reality might be. Whatever way it turns out that reality is, whichever mathematical structure accurately describes it defines its properties.

    One might even say (as Max Tegmark more or less does) that concrete existence, the kind of existence that applies to rocks and trees and such, is just a special case of abstract existence, the kind that applies to mathematical structures like numbers and triangles. All mathematical structures "exist" in that abstract sense, and the things that "exist" in a more concrete sense are just the things that are part of the same mathematical structure of which we are a part, i.e. of our physical reality.

    Similar to how, as David Lewis puts it, "'actual' is indexical", i.e. in a multiverse of possible worlds (which, NB, would all be part of the concrete world we're talking about above), the "actual world" is just the one that we happen to be part of, and not ontologically different from any of the other possible worlds. We might likewise say that "'concrete' is indexical"; concrete reality is just the abstract structure of which we are a part, and not ontologically different from any other abstract structures.

    It's still an empirical question to figure out which possible world (configuration) of which abstract structure we are a part of. But whatever the answer will turn out to be, there's some possible math that will describe it.

    --
    -Forrest Cameranesi, Geek of all Trades
    "I am Sam. Sam I am. I do not like trolls, flames, or spam."
  18. Useful to know for computer hardware design by goombah99 · · Score: 4, Interesting

    Without having to understand the physics or worry if it's right or not there is an important fact to be gleaned for computer scientists here. Specifically, we won't have a strong need to ever build SIMD systems wider than 8 (well maybe 16). There might be advantages for parallelism beyond that but they are merely scaling advantages not representational advantages.

    That is to say, we currently handle 4 wide floats efficiently in SIMD systems. That's not an accident. Systems like Silicon Graphics were specially designed for exactly the purpose of efficient 4x4 matrix multiplication to handle quaternion graphics. Four is the essential number needed to make the atomic unit of all those transactions be the quaternion size. It makes everything else easier if you are not having to do bookkeepping on the data representation of the 4-vectors.

    One might have thought that well, make an 8 then someone will want a 16 then a 32. So there's nothing special about 8. But this says indeed there is something special about 8. It's the largest size you really need to worry about the bookkeeping on. It's the largest atomic unit most algebras will ever need to treat.

    You could scale beyond that but you will want to make sure that the most efficient ops can work on 8-vectors in whatever designs you consider in the future. it's special.

    And microcode desginers will also want to make 8-ops special as well. Page boundaries should be multiples of 32= (8*float) etc...

    --
    Some drink at the fountain of knowledge. Others just gargle.
    1. Re:Useful to know for computer hardware design by mikael · · Score: 2

      There are the AVX, AVX-256 and AVX-512 extensions to the x64 instruction set. 128-bit width gives four floating point, 512-bit width registers gives sixteen floating point values or eight double precision values.

      --
      Vintage computer adverts: http://www.vintageadbrowser.com/computers-and-software-ads
  19. Maxwell's equations and quaternions by dtmos · · Score: 5, Interesting

    The really amusing thing to me is that historically, James Clerk Maxwell’s mathematical theory of electromagnetism (published in 1865), which for the first time unified electricity and magnetism, was written in the form of quaternions. For this reason, it was viewed by the engineering world as obtuse and impenetrable – 20 equations in 20 unknowns! Little was done with it until Oliver Heaviside re-wrote the theory in 1884 using the curl and divergence concepts of vector calculus, replacing 12 of the 20 equations with four short differential equations. Ironically, these four equations are now taught to undergraduates as “Maxwell’s Equations,” even though Maxwell never saw them (he died in 1879).

    I’ve never seen an electromagnetics textbook written after 1900 that uses the original quaternion description of electromagnetics – they all use Heaviside’s vector calculus approach. It would be supremely ironic if a distaste of quaternions set the search for Physics’ Unified Field Theory back 150 years.

    1. Re:Maxwell's equations and quaternions by mykepredko · · Score: 2

      I forgot about that. When I was in university and learning Maxwell's equations, it was explained to us that using Calculus was the "simpler" way - Maxwell's original method used an approach which lead to a dead end.

      Thanx for the memories.

    2. Re: Maxwell's equations and quaternions by Tomahawk · · Score: 4, Interesting

      It's also interesting that the equations could be changed that way. Maybe that works between all of levels.

      Here's the Unified Theory of Everything in octonions using x formulae that explain everything.

      Now that that's done, we can simplify them into the fewer equations in quaternions.

      Now that that's done, we can simply again to fewer equations in complex numbers.

      Now we have something that's much easier to understand, but to properly appreciate it and work with it and expand upon it you need to go back to the original octonion. Then resimplify.

      (If simply is the correct word here)

    3. Re:Maxwell's equations and quaternions by drew_kime · · Score: 1

      Little was done with it until Oliver Heaviside re-wrote the theory in 1884 using the curl and divergence concepts of vector calculus, replacing 12 of the 20 equations with four short differential equations.

      With a name like that, he's got to be an Avenger, right?

      --
      Nope, no sig
    4. Re:Maxwell's equations and quaternions by JaxDefore · · Score: 3, Interesting

      after years of reading slashdot I was moved to create a login because of your post. It is the single most interesting thing I have read in ages. Thank you for it - this is why I slog through the posts every day - golden nuggets of fascinating insight. it reminds me of James Burke's Connections (which I hope comes across as a positive mention to you - that's how I meant it)

    5. Re:Maxwell's equations and quaternions by Anonymous Coward · · Score: 2, Informative

      According to Michael J. Crowe, "A History of Vector Analysis", Maxwell developed his theory using component analysis in the 1860's. He began studying quaternions in 1870, and presented both component and quaternionic notation in his 1873 "Treatise on Electricity and Magnetism." A brief history can be found at http://fexpr.blogspot.com/2014/03/the-great-vectors-versus-quaternions.html

    6. Re: Maxwell's equations and quaternions by zlives · · Score: 1

      all this is beyond me, however it seems that because something was harder(obtuse) it was ignored (mostly) even though it may actually had been the right path to understanding a unified theory.
      some things should be hard, which doesn't mean the application can't be simplified or made available/accessible.
      this has been a happy friday for me.

    7. Re: Maxwell's equations and quaternions by DCFusor · · Score: 2

      You could hope for that. After all, a lot of problems in signal processing are solved more easily by flipping to a different domain (say, frequency instead of time), solving it there, and then converting back.
      In fact, something similar is what Ed Witten was on about in joining the various (sub) string theories, so that a problem insoluble in one of them could be solved in another, then converted back.

      --
      Why guess when you can know? Measure!
    8. Re: Maxwell's equations and quaternions by Actually,+I+do+RTFA · · Score: 1

      Here's the Unified Theory of Everything in octonions using x formulae that explain everything.
      Now that that's done, we can simplify them into the fewer equations in quaternions.

      The number of quaternion equations will probably be greater than the octonion or vector versions. Which is why they were avoided for a while.

      Each equation will be quite simple, but the number will grow pretty dramatically. Compare how simple motion is taught pre and post calculus. Pre-calculus, you're taught dozens of equations for every possiblility. Like, when you have time, initial speed and acceleration, use an equation to get distance. Etc. Once you know calculus, you're down to one equation you modify and solve for

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    9. Re:Maxwell's equations and quaternions by dtmos · · Score: 1

      Crowe is right; I was writing from memory and forgot the component analysis cul-de-sac -- I should have written 1873 instead of 1865 for the quaternion publication. History is always more complicated than we remember; Maxwell spent more than a decade developing the theory, and it's the quaternions that most recall of that era.

      Mea culpa.

    10. Re: Maxwell's equations and quaternions by zlives · · Score: 1

      damn it, you just gave me nightmares of laplace transforms

    11. Re: Maxwell's equations and quaternions by DCFusor · · Score: 1

      Hey, I lived through them. It'll make you stronger!

      --
      Why guess when you can know? Measure!
    12. Re: Maxwell's equations and quaternions by epine · · Score: 1

      It's also interesting that the equations could be changed that way.

      Interesting doesn't begin to cover it.

      Missed Opportunities by Freeman Dyson (1972) ... in which Dyson slags on Gibbs.

      See numbered page 644 (document page 10).

      I do not know how many pure mathematicians heard or read Gibbs' lecture. If they had studied it carefully, they would soon have noticed that Gibbs had not really succeeded in unifying the notions of quaternion and vector. On the contrary, by putting the two notions side by side he had made explicit the lack of any real compatibility between them

      His lecture ought to have suggested to any attentive mathematician the question, "How can it happen that the properties of three-dimensional space are represented equally well by two quite different and incompatible algebraic structures?"

      If this question had once been clearly asked, the answer would almost certainly have been forthcoming. And the answer would have led inevitably to a complete theory of the single-valued and double-valued representations of the three-dimensional rotation group. The vectors are the simplest nontrivial single-valued representation, and the quaternions are the simplest double-valued representation.

      Also, the quaternions are the prototype of what later were called spinor representations. The development of the theory of spinor representations, which was actually begun by Elie Cartan in 1913 and completed during the 1930's with substantial help from the physicists Pauli and Dirac, might have been accelerated by approximately 40 years.

      It is impossible to say what effects such an accelerated development would have had on other branches of pure mathematics, but the effects could hardly have failed to be substantial.

      I commented on Slashdot for a long time, because there's a certain utility in mastering Defense Against the Dim Bulbs.

      And here's this long, geeky Slashdot thread with everyone stumbling around looked for the entry point into the higher plane of comprehension, and turns out it was completely covered on Reddit back in 1972.

      * Freeman Dyson "I kept quiet for thirty years, maybe it's time to speak." — 15 June 2018

      It happens that I corresponded with two heretics on the subject of evolution. Motoo Kimura who was a Japanese biologist and Ursula Goodenough, an American biologist. Both of them had heretical ideas about evolution which I think were probably correct.

      I'm preparing a talk which discusses the idea that Darwin was correct up to a point but he didn't tell us the whole story.

      Because the biologists are very defensive about Darwin. If you say anything critical about Darwin you're regarded as an enemy. It's a very dangerous subject to tread on. I kept quiet for thirty years so maybe it's time to speak.

      * The Key to Everything — 10 May 2018

      The explanation lies in the peculiar behavior of gravity in the physical world. On the balance sheet of energy accounting, gravitational energy is a deficit. When you are close to a massive object, your gravitational energy is minus the amount of energy it would take to get away from the mass all the way to infinity. When you walk up a hill on the earth, your gravitational energy is becoming less negative, but never gets up to zero.

      Any object whose motions are dominated by gravity will have energy decreasing as temperature increases and energy increasing as temperature decreases. As a consequence of the second law of thermodynamics, when energy f

  20. Nearly every vector machine is SIMD 8 by Brannon · · Score: 2, Informative

    You're assuming horizontal SIMD, and ignoring vertical SIMD. Horizontal SIMD places values in the SIMD lanes corresponding to dimensions 'x', 'y', 'z', etc. Vertical SIMD places values in lanes corresponding to the same dimension across different items: e.g. 'x0', 'x1', x2', ....

    The former is arguably bounded to a small finite number, the latter isn't.

  21. Re: Sounds delicious by Tomahawk · · Score: 1

    Octmushrooms!

  22. Re:cart before the horse? by MikeMo · · Score: 1

    Yeah... um, right... this is intuitively obvious to the casual observer...

  23. Re:Meh by Anonymous Coward · · Score: 1

    We could have had a nice topic on math and physics, but nooooo you had to toss out a non sequitur and bring up Trump and shit on the entire topic instead of letting the ACs respond to themselves.

  24. Re: Is this just a new formalism for particle phys by Tomahawk · · Score: 1

    It seems to imply that she is going through the process of refining the Standard Model and Quantum Mechanics in octonion maths, but isn't fully there yet. Some of it is done, but there is more to go. Perhaps once done, predictions will be made. Although it's does already seem to predict that there is nothing beyond the Standard Model, with a magic number being 8.

  25. Re: Meh by Anonymous Coward · · Score: 1

    And here we are, talking about the most profound mysteries of the universe until the trump derangement syndrom had to pop up. The poor leftist mind, can never catch a break.

  26. Erm, well sure ... by cascadingstylesheet · · Score: 2

    ... I was gonna say that.

  27. reminds me of O. Heaviside & Maxwell's equati by volvox_voxel · · Score: 5, Informative

    I'm reminded of Oliver Heaviside, who refactored Maxwell's equations into the useful and familiar vector notation that has adorned many tshirts of electrical engineering and physics students. Heaviside took an unwieldy set of twenty field equations, and reduced them to four. I do wonder what insights we can potentially learn if the model itself is refactored into an elegant form.

    Her PhD thesis: https://arxiv.org/pdf/1611.091...

    The mathematician John Baez has an engaging writing style, and gave an amusing account of octonian numbers (His blog is very interesting BTW): http://math.ucr.edu/home/baez/

    "There are exactly four normed division algebras: the real numbers (R), complex numbers (C), quaternions (H), and octonions (O). The real numbers are the dependable breadwinner of the family, the complete ordered field we all rely on. The complex numbers are a slightly flashier but still respectable younger brother: not ordered, but algebraically complete. The quaternions, being noncommutative, are the eccentric cousin who is shunned at important family gatherings. But the octonions are the crazy old uncle nobody lets out of the attic: they are nonassociative."

    http://math.ucr.edu/home/baez/...

  28. Re:cart before the horse? by lurker412 · · Score: 1

    I don't understand this. Doesn't ontology ask "what is?" not "what is possible?"

  29. summary inaccurate by thePsychologist · · Score: 2

    Says that the reals, complex numbers, quaternions, and octonions are the only kinds of numbers that can be added, subtracted, multiplied, and divided. This is obviously false, as that can be done in any division algebra (including any field, like finite fields, rational numbers, etc, and there are there are uncountably many fields).

    What they meant to say is that those are the only normed division algebras - basically, algebras over the real numbers with a notion of distance and such that the distance is compatible with multiplication.

    --
    "What lies behind us, and what lies before us are tiny matters compared to what lies within us." Ralph Waldo Emerson
  30. Geometric Algebra by sfcat · · Score: 3, Insightful
    Octonions, quaternions and the like are algebras for dealing with dimensions represented by imaginary numbers. But they are special purpose, like most of the algebras used by physicists. They were 1 of 2 ways to represent vectors in math (the other being Vector Algebra). A way of uniting these two methods into 1 framework was discovered by Clifford about 50 years later but by that time there was a big split in math over VA vs Quaternions (which VA won). And most of the field ignored Clifford and his way to unite the two (VA and Quaternions). This is a big reason why its hard to unite multiple parts of physics as some still use Quaternions while most others use VA.

    So in the 50s a mathematician named David Hestenes developed a new branch of math called Geometric Algebra (based upon Clifford Algebras) which could subsume all of the different algebras used by physicists (and many others too). Additionally, it can handle contravariance and covariance, any positive integer number of dimensions, and handle algebras over imaginary numbers. Quantum Loop Gravity uses Geometric Algebra for instance. The problem is that Geometric Algebra isn't taught yet except perhaps at a post-doc level to mathematicians. The first textbook covering GA for Computer Science was just published in 2017. There are hopes that reformulating physics in to GA will allow unifications that were either not possible or too difficult when each part of physics uses different types of algebras.

    The problem with all of this? GA is really really really hard. There is even an extension to GA called Geometric Calculus that's even more difficult. Given how difficult most students find VA which is much easier than GA, I'm not sure when we can expect most physics to make new theories using GA instead of VA. But when we can climb that hill, we will likely be able to see new physics on the other side. There are also a great many CS applications of GA as well (which is what I do).

    My take on TFA, is that this physicist is going down a wrong path because she was never taught GA. If she finds something, it will likely have to be converted into GA to unify it with other algebras used in other parts of physics. But I could be wrong, who knows but some of the greatest physicists in history have gone down this specific rabbit hole with nothing to show for it at the end. I wish her luck.

    --
    "Those that start by burning books, will end by burning men."
  31. Simple answer by Okian+Warrior · · Score: 5, Interesting

    Can any of you smart mathematicians and physicists possibly down-translate this for the rest of us?

    I'm sure I'm not alone in admitting I have not the slightest idea what the hell this is. OK, maybe I'm alone in admitting it, but I'm sure I'm not alone in having no idea what this is saying.

    Around 1940 (IIRC), Eugene Wigner pointed out that symmetries in physics let is map physical theories to abstract groups, and this can place restrictions on what the correct equations have to be, in a way that lets us winnow down the possible theories to only those that satisfy the group topologies.

    Suppose you have a square playing card nestled in a square indentation on a table (a regular playing card, except it's square instead of rectangular). How many ways are there to pick up the card and place it back down in the indentation?

    The answer is 8 possible ways. If you paint one of the edges of the card, then there are 4 possible sides (of the hole) where the painted edge can go, and then you can have the card face-up or face-down. Each of these placements corresponds to a rotation or a flip of the card: Four rotations (including the identity rotation of 0 degrees), and four flips, along the vertical, horizontal, or two diagonal axes.

    No matter how many rotations and flips you make, you always end up in one of the 8 basic positions. Thus, the operations form a group - called the "dihedral" group. The operations are closed: no matter how many flips and rotates you use, it ends up as the same as one of the original 8. Each operation has an inverse, and the 0 degree rotation acts as an identity element. (It's also associative, but that's difficult to show.)

    Now imagine the card centered on the X-Y plane, and draw 4 vectors from the origin out to each of the four corners. You can define 8 matrices that flip the vectors in various ways, each matrix being associated with one of the flip or rotate operations.

    Thus, the 8 matrices become a representation of the dihedral group. This puts some strong restrictions on the types of matrix you use: each matrix has to have length 1 (it can't change the length of the vectors), and you can't flip one edge over without flipping the opposite edge, because you can't "twist" the card. The matrix length can't be -1 because that would make the card a mirror image - the "J" of a Jack would curve to the right instead of the left.

    You can now use matrix mathematics to prove things about your group.

    For a different group, consider a vector going from the origin to the unit sphere. You can consider all matrices that rotate the vector in 3D without changing its length or moving its origin. This also forms a group (operations are closed, operations have inverses, and there's an identity operation), but it's an infinite group (a Lie group) and the sphere surface is "smooth". This means that you now can now use differential geometry to prove things about your group.

    This group is called SU(3), the "Special Unitary group". It's "Unitary" because the rotations don't change the lengths of the vectors (the matrices are of length 1), and it's "Special" because it doesn't allow mirror-images: the determinant ("length") of the matrix cannot be -1, in the same way that we can't have a matrix of length -1 when rotating cards.

    Now consider a physics experiment. We set up an apparatus, calculate the wave equation, and at the end we measure (for example) the energy. We measure energy by applying an operator to the wave equation that describes the experiment.

    We can imagine rotating our point of view around the experiment, so that when we do the experiment we measure the energy looking from the other side of the apparatus.

    We expect in that case to get the same value.

    This means that the energy operator we apply to the wave eq

    1. Re:Simple answer by Dr.+A.+van+Code · · Score: 1

      Wonderful. A truly excellent explanation. Thank you.

      --
      Good mfences make good neighbors.
    2. Re:Simple answer by Anonymous Coward · · Score: 1

      If you ever have time, please consider editing some of the relevant articles on Wikipedia. Too many of the explanations there assume the reader already has extensive mathematical knowledge.

  32. Re:cart before the horse? by Pfhorrest · · Score: 3, Interesting

    Ontology does ask "what is?", but a possible answer to that question is "everything that could possibly be".

    Even given that answer to that unqualified question, we can (and usually implicitly mean to) ask a more restricted version of it, like "What concretely exists?", "What actually exists?", or even "What presently exists?" In philosophy of time people argue about presentism vs eternalism, and one proposed resolution to that argument is just to note different senses of the word "exist", one in the present tense and one tenseless: only the present presently exists, now, but other times exist in a tenseless sense of the word "exist". Other possible worlds and other mathematical structures may likewise "exist" in increasingly broader sense of the term than the one that means "right now, in the actual configuration of this reality".

    --
    -Forrest Cameranesi, Geek of all Trades
    "I am Sam. Sam I am. I do not like trolls, flames, or spam."
  33. Re:cart before the horse? by lurker412 · · Score: 1

    So is it like Bill Clinton said, "depends on what the meaning of "is" is? I suppose it's all way over my head, but I have to say that I was always quite happy with Johnson's refutation of Berkeley.

  34. Re:cart before the horse? by Pfhorrest · · Score: 1

    Bad form to reply to myself, but can't edit posts on Slashdot:

    In the most restricted sense, one could say "only what I am experiencing right here right now exists": complete solipsism. Everything else is some degree of inference and abstraction. Part of what I'm experiencing right now is memory, from which I infer (intuitively, without thinking about it) the existence of other times, including projected future times. In that "movie" of my past, present, and future experiences now inferred, I seem to move around different places, so I infer (again, just intuitively; we all do this stuff without thinking about it) that other places exist too, besides just the here that I am experiencing now. Other possible worlds help to make sense of the larger world of space and time now inferred, so we can infer their existence too. Other mathematical structures help to make sense of that multiverse now inferred, so we can infer their existence too. All in more and more broad and general senses of the word "exist", true, but you're going to concede to a broader reality than just your own present experience anyway, why not go all the way?

    --
    -Forrest Cameranesi, Geek of all Trades
    "I am Sam. Sam I am. I do not like trolls, flames, or spam."
  35. Re:cart before the horse? by Zorro · · Score: 3, Insightful

    Remember Mathematics only MODELS reality. It isn't reality itself. It is just a model of reality we can understand and manipulate.

  36. Re:cart before the horse? by Pfhorrest · · Score: 2

    So is it like Bill Clinton said, "depends on what the meaning of "is" is?

    Hah, I like making that joke/reference in this context myself. :-)

    Another fun one: the field of mereology studies the relationships between parts and wholes, and the difference between continuous stuff that has no proper parts and is infinitely divisible, and discrete things that are made of other discrete things down to some atomic (indivisible) level. In that context, "stuff" and "things" are technical terms referring to those continuous and discrete kinds of beings. So what do mereologists study? Oh, you know... things, and stuff.

    --
    -Forrest Cameranesi, Geek of all Trades
    "I am Sam. Sam I am. I do not like trolls, flames, or spam."
  37. Re:cart before the horse? by Pfhorrest · · Score: 2

    The map is not the territory, true. Unless you have a perfectly detailed map at 1:1 scale, in which case you have just replicated the territory.

    Mathematics models reality in that we don't know exactly what reality is like and we're trying to make a map of it. But whatever model it is that would perfectly map reality in every detail, would be identical to reality itself. We just don't know what model that is.

    --
    -Forrest Cameranesi, Geek of all Trades
    "I am Sam. Sam I am. I do not like trolls, flames, or spam."
  38. Re:Computer scientists by sconeu · · Score: 1

    When Bruce Schneier sees something he doesn't understand, he mentally decrypts it.

    --
    General Relativity: Space-time tells matter where to go; Matter tells space-time what shape to be.
  39. Cool name of author by pchenden · · Score: 2

    Her name sounds like a comic book super hero. Cold Fury?

    1. Re:Cool name of author by RandomFactor · · Score: 1

      Agreed. I want her to be right just because that's an awesome name.

      --
      --- Mercutio was right.
  40. Re:cart before the horse? by wtrmute · · Score: 2

    One might even say (as Max Tegmark more or less does) that concrete existence, the kind of existence that applies to rocks and trees and such, is just a special case of abstract existence, the kind that applies to mathematical structures like numbers and triangles. All mathematical structures "exist" in that abstract sense, and the things that "exist" in a more concrete sense are just the things that are part of the same mathematical structure of which we are a part, i.e. of our physical reality.

    Or, as Aristotle says, the substance of a thing like a rock or a tree has a prior existence to the concrete instances of it: "The essence, i.e. the substantial reality, no one has expressed distinctly. It is hinted at chiefly by those who believe in the Forms; (...) they furnish the Forms as the essence of every other thing, and the One as the essence of the Forms." (Metaphysics, Book I, part 7)

    Similar to how, as David Lewis puts it, "'actual' is indexical", i.e. in a multiverse of possible worlds (which, NB, would all be part of the concrete world we're talking about above), the "actual world" is just the one that we happen to be part of, and not ontologically different from any of the other possible worlds. We might likewise say that "'concrete' is indexical"; concrete reality is just the abstract structure of which we are a part, and not ontologically different from any other abstract structures.

    Aristotle again? "Actuality, then, is the existence of a thing not in the way which we express by 'potentially'; we say that potentially, for instance, a statue of Hermes is in the block of wood and the half-line is in the whole, because it might be separated out, and we call even the man who is not studying a man of science, if he is capable of studying; the thing that stands in contrast to each of these exists actually."

  41. Re:cart before the horse? by ffkom · · Score: 2

    Yes. Reality will be defined by some mathematical structure or another. We can invent mathematical structures to describe any possible way that reality might be. Whatever way it turns out that reality is, whichever mathematical structure accurately describes it defines its properties.

    You are turning math into a religion, in a very unconvincing way.

    Following the same line of argumentation, I could state "The God of my religion X has created the Universe and defined the one true reality. It is all written in our holy book. Whatever observation you might come up with that contradicts the colorful stories in our holy book, we will just adjust the book to make it fit! So no matter how many convoluted additions we will need to make, we can invent them!".

    Math is a utility. A useful one to describe a model of reality as we know it. But it does not define or create reality.

    Just because some solutions exists for formulas used in general relativity that could be interpreted as "Tachyons" does not mean such "Tachyons" exist in reality. It might be worth looking for them, but the result can be there are none. Whatever mathmatical model you can invent, it will certainly allow for possibilities that do not exist in reality. And it might still miss to model real things that do not become known to any intelligent lifeform before those ceases to exist.

  42. Re:cart before the horse? by Pfhorrest · · Score: 3, Insightful

    Your religious analogy is flawed in that you're talking about people claiming that some particular book defines reality, and then freely and unabashedly modifying that book to fit reality; whereas what I'm talking about is more like saying "there is some possible book that could be written that would perfectly describe the rules of reality. Whatever rules would be written in that book, those rules define reality." It's pretty much a tautology.

    There is some rigorous formal (i.e. mathematical) system that would be a perfect description of reality. Whatever the rules of that system are, those are the rules of reality, because that system is defined as whichever one has the rules of reality as its rules.

    What the author of the paper in question here is saying that if this math regarding octonions is part of the mathematical system that perfectly describes reality, then no further explanation for the discrete values of electrical charges is needed, because that phenomenon is just an automatic consequence of integers having discrete values, in such a system.

    It's like saying that if the geometric structures called ellipses describe the motion of the planets, and the Earth is a planet whose motion is described by that structure, then no further explanation for the apparent retrograde movement of the other planets in the sky is necessary, because that relative apparent motion is just an automatic consequence of the geometry of elliptical motion.

    --
    -Forrest Cameranesi, Geek of all Trades
    "I am Sam. Sam I am. I do not like trolls, flames, or spam."
  43. Re:Meh by kenai_alpenglow · · Score: 2

    And, BTW, what the heck does this have to do with 8 dimensions anyway?

  44. Re:cart before the horse? by alexgieg · · Score: 1

    logically for math to work, God must exist

    Gods. Plural. At least according Plato's ontological realism, in which every number is a god, as is the demiurge and many other stuff. Or, alternatively, according Aristotle's and his unmovable movers (yes, more than one). Or even according Neoplatonism's polycentric henology.

    Monotheists like to try and bring the Biblical notion of the one single god into this, but that's actually just one alternative between many. And that's not even counting Eastern meontologies, which move one step beyond the above ontologies up into non-being/ground-of-being territory.

    --
    Conservatism: (n.) love of the existing evils. Liberalism: (n.) desire to substitute new evils for the existing ones.
  45. Re:Feminist propaganda by coolsnowmen · · Score: 1

    Can I get a diagram of this please? Asking for a friend.

  46. Re:cart before the horse? by sjames · · Score: 2

    Yes, but when you don't yet know the answer, it helps if you can at least confine your search within what is possible. Math in general defines what is possible. We can further confine the search based of what math in particular can describe what we already know about reality.

    What's really interesting is that the algebra of Octonions seems to have the physical properties of the standard model naturally fall out as a result of the properties of the underlying algebra rather than having to be "bolted on" piece by piece. In general, that's a sign that you're on to something. Compare elliptical orbital mechanics controlled by one equation and a few simple parameters vs an infinite series of epicycles each hand tuned to fit observation.

  47. Re:Nearly every vector machine is SIMD 8 by goombah99 · · Score: 1

    well yes I think that's what I said in other terms. the representational format (as you called "x y z t") verus the pures scaling format (0,1,2,3,4..). the limit of 8 on the divisional algebras makes this special for the representational one.

    --
    Some drink at the fountain of knowledge. Others just gargle.
  48. Re:Meh by d00ber · · Score: 1

    Your portfolio went up under Obama too.

  49. Re: Meh by Anonymous Coward · · Score: 1

    No,you just plan your day around crying about crying about Trump, you dimwitted dram of donkey diarrhea.

  50. Re:cart before the horse? by zlives · · Score: 1

    hmmm does this make i and imaginary god...

  51. Re: Is this just a new formalism for particle phys by zlives · · Score: 1

    and if that is proven true... that is an amazing feat in itself.

  52. Re:Feminist propaganda by Ferocitus · · Score: 1

    All of a sudden the world is filled with women geniuses in every area. The past has been rewritten to include "very important" discoveries made by previously unknown women.

    There is nothing in this garbage that hasn't been figured out by men long time ago. I'm sick with this propaganda. Fuck women!

    Proof that Incel Trumpeters aren't coping well with the recent bans on Alex Jones.

    --
    USB, USB, USB!
  53. Re:Is this just a new formalism for particle physi by sjames · · Score: 1

    Currently, it doesn't predict anything. HOWEVER, once complete (if successful), it will be a cleaner and more natural formalism. It should also be able to unify relativity/gravity with QM. THAT should produce some strong predictions.

  54. Re:Meh by Dorianny · · Score: 1
    Among the memorabilia at my local pub there is a old sign that reads "No Irish need apply"

    Immigration and hatred for the newcomers is absolutely nothing new in the country

  55. Re:Meh by Hognoxious · · Score: 1

    sudo get me a coke

    --
    Confucius say, "Find worm in apple - bad. Find half a worm - worse."
  56. Re: Meh by tigersha · · Score: 1

    Are we supposed to understand this comment?

    --
    The dangers of excessive individualism are nothing compared to the oppressiveness of excessive collectivism
  57. Re:Meh by minstrelmike · · Score: 1

    ... Lets keep politics out of mathematics

    The endless struggle to keep politics out of "X" rides the same rails as the struggle to keep religion out of "Y".

    How about the doctrine of fairness? Politicians and voters don't allow logic and analysis in politics, therefore, we shouldn't put politics into math. Thinks of it as a commutative property of philosophy.

  58. Re:Meh by Required+Snark · · Score: 1
    Trump lies. He lies compulsively, typically multiple times a day. Show some evidence from a source that is not a part of the Republican propaganda apparatus that this claim is correct. No Fox News, Breitbart or US government source allowed. This is the administration that has censored references to climate change, so nothing they say can be trusted without verification.

    Trump's Republican Party is a White Supremacist organization and you are clearly with the program. Remember it was only a year ago that real live American Nazis with real live swastika flags were marching in Charlotte in support of Trump. Your claim that minorities are thriving under the current regime smacks of the same kind of propaganda as Arbeit macht frei used at Nazi death camps.

    --
    Why is Snark Required?
  59. Also, don't eat beans by arctother · · Score: 1

    Pythagoras called, he wants his idea back

  60. Will work for brain cells! by catsRus · · Score: 1

    Excuse me sir do you have any spare brain cells.

    This is still above my pay grade.

  61. Re:cart before the horse? by Lost+Race · · Score: 1

    There is some rigorous formal (i.e. mathematical) system that would be a perfect description of reality.

    How do you know this? Reality might not be describable by any formal language.

  62. Re:Meh by pslytely+psycho · · Score: 1

    There were eight quarters of growth of at least 3 percent, including three of 4 percent or better under Obama.

    Oh, yeah, forgot the required insult.

    um, you obtuse conservative.

    I'll never survive the age of Trump, I suck at insulting people.

    --
    Donald Trump, on a crusade to make Nixon look respectable
  63. Re:cart before the horse? by Pfhorrest · · Score: 1

    Because we can always just invent one as needed.

    --
    -Forrest Cameranesi, Geek of all Trades
    "I am Sam. Sam I am. I do not like trolls, flames, or spam."
  64. Re:cart before the horse? by Lost+Race · · Score: 1

    That begs the question. Consider mathematics, which cannot be completely described by any formal language, to the extent that there are true statements that cannot be derived from axioms (Goedel). Reality might have properties that cannot be derived or even stated in any given formal language. No matter how much you tweak and extend your formal language, some of reality will always escape it. Maybe. I'm not saying that this is necessarily the case, but I certainly don't share your certainty that reality can be completely ("perfectly") described formally.

    So I'll ask again, out of genuine curiosity: Do you have some reason to believe that reality is completely formally describable?

  65. Re:cart before the horse? by Tyler+Durden · · Score: 1

    You're assuming that such a model must necessarily exist, which is a huge assumption to make. Especially considering that there are many results in mathematics indicating that self-referential systems (say, for example, a complete model of reality created from within said reality) tend to be problematic.

    --
    Happy people make bad consumers.
  66. Re:Meh by Dread_ed · · Score: 1

    OK, so what I am hearing you say is this "CNN, Reuters, AP news, NPR, and MSNBC are horrible news sources that Trump has co-opted and subverted to Russian control. No one can be trusted. I don't even know if I can be trusted. I swear I heard Russian voices from my toothpaste tube this morning. Are they in my head now?"

    You have taken a logically sound position (distrust of politicians, government, and the press) and twisted it into an excuse to deny the veracity of any information you find undermines the house of cards you call a worldview. Go check out any news source you would like on this claim. No one, save you, disputes it.

    Also, can we coin a new logical fallacy already for people who see NAZI's everywhere?

    Your insanity aside, the truthfulness of the issue is really not at issue with respect to what I am stating. The Democrats at the State of the Union address weren't protesting the veracity of the information about jobless claims. They were upset that this happened under Republican control and wanted to make sure to turn a victory of the American people into a point of contention. They made it about themselves, not about We, The People, and in doing so fomented division, hatred, self hatred, disorientation to truth, and disorientation to authority.

    I didn't expect Trump to speak for The People, to be their champion, to sing their victories and to point out how strong we are. That is the domain of the Democrats. Well, was the domain of Democrats, until they found their true religion and started selling division and hatred as their mainstay of party politics.

    So yeah, telling me to not trust Trump is just finger exercise you pitiful nincompoop. Par for the course, of course. What I was deeply saddened by was the reaction by the Democrats. They wanted to make a statement, so they did. In doing so they showed me what they really think of us.

    --
    When the only tool you have is a claw hammer every problem starts to look like the back of someone's skull.
  67. Re:Meh by Dread_ed · · Score: 1

    Hatred is one thing. Saying you support people who come here and then making sure they have no path to citizenship is completely another. Those hated Irish were citizens. They got a voice and a vote, and while they might have lived in fear of what some other citizen would do to them, they didn't have to live in constant fear of what the country's laws would do to them.

    How can you miss the glaringly obvious differences? Are you too stupid to realize the difference between being a citizen and an illegal immigrant? I don't think so. I suspect you are trying your best to sidestep the issue because you have no way to rebut the facts.

    --
    When the only tool you have is a claw hammer every problem starts to look like the back of someone's skull.
  68. Re: Meh by iggymanz · · Score: 1

    wrong, the theoretical predictions include properties that are verified by experiment.

  69. Re:Meh by Dorianny · · Score: 1
    You can rationalize your hatred however you want, I'm sure the people that hated the Irish had very good reasons for doing so as well

    However I will not tolerate your bigotry. Calling me stupid because of a stated opinion is completely unacceptable

  70. Re:cart before the horse? by Pfhorrest · · Score: 1

    You misunderstand Goedel. Any sufficiently expressive formal languag can formulate statements that IT cannot decide the truth of, but we can always formulate another language with which to discuss that system and the truth of the statements it cannot decide. We wouldn’t even be able to state Goedel’s theorem if that were not the case.

    --
    -Forrest Cameranesi, Geek of all Trades
    "I am Sam. Sam I am. I do not like trolls, flames, or spam."
  71. Re:cart before the horse? by Lost+Race · · Score: 1
    I was hoping you had some sort of proof of your assertion that reality is equivalent to a formal language. That would be pretty cool.

    "There is some rigorous formal (i.e. mathematical) system that would be a perfect description of reality. Whatever the rules of that system are, those are the rules of reality, because that system is defined as whichever one has the rules of reality as its rules."

  72. Re:Meh by Dread_ed · · Score: 1

    Wait a second. I'm a bigot because I want people living in America to be full participants in this country? Because I want people to live without fear of their families being taken apart i'm hateful? Because I don't want to hold people for ransom and don't rejoice when the second lives they have worked so hard to start and build are destroyed, I'm a hateful bigot?

    You think because I subscribe to a version of America described by "The New Colossus" that I am a hateful person?

    You are either the stupidest human I have ever met, or you are a sub-human piece of shit. Either way, I will state one last time unequivocally that exploiting people for political gain is anti-American, even though partisans will tell you completely different. Like you're doing.

    I do not support hatred, especially the ingrained kind where people will tell themselves they are helping people while they use them for their own purposes. You seem to espouse this.

    You can fuck right off to the depths of hell for all I care. You're aren't part of the problem, you are the problem.

    --
    When the only tool you have is a claw hammer every problem starts to look like the back of someone's skull.
  73. Re:cart before the horse? by Pfhorrest · · Score: 1

    I'm kind of baffled that you could think it could possibly not be, absent some reason to think that (like your misunderstanding of Goedel). The alternative to reality being describable by a formal language would be one of these two things:

    1) Some phenomenon occurs, and we are somehow unable to even speak about it.

    or

    2) We can speak about it, but only in vague poetic language using words and grammar that are not well-defined.

    I struggle to imagine any possible phenomenon that could cause either of those problems. In fact, it seems to me that such a phenomenon is, in principle, literally unimaginable: I cannot at the same time picture in my head some definite image of something happening, yet at the same time not be able to describe it, as rigorously as I should feel like, not even by inventing new terminology if I need to. At best, I can just kind of... not really definitely imagine anything in particular.

    To be fair, some people (theological noncognitivists) hold that religious concepts are like this, but precisely because of that, I find I cannot pin down what exactly they're even really talking about. They seem to be saying something to the effect of that religious terms are like poetry, which seems to me to mean that the referents of those terms are... the warm fuzzy feelings that that 'poetry' gives you?

    --
    -Forrest Cameranesi, Geek of all Trades
    "I am Sam. Sam I am. I do not like trolls, flames, or spam."
  74. Re:Meh by Dorianny · · Score: 1

    You are a bigot for calling me an idiot for a stated opinion and for continuing on with personal insults.

  75. Re:Meh by Dread_ed · · Score: 1

    Here is exactly what I wrote. Show me on the doll where I called you stupid...

    "Are you too stupid to realize the difference between being a citizen and an illegal immigrant? I don't think so."

    So me saying you are not stupid means I called you stupid, which makes me a hateful bigot.

    Got it. I was right: " I suspect you are trying your best to sidestep the issue because you have no way to rebut the facts."

    I hit too close to home. Understood. You can't take it. Understood. You will lie to yourself and to me to protect yourself from seeing yourself as you truly are. Understood.

    --
    When the only tool you have is a claw hammer every problem starts to look like the back of someone's skull.
  76. Re:Meh by Dorianny · · Score: 1
    You are the stupid one if you think anyone doesn't understand what you mean when you say

    "You are either the stupidest human I have ever met, or you are a sub-human piece of shit."

    Typical bigot. When faced with differing opinions, insult.

  77. Re:Meh by Dread_ed · · Score: 1

    You're such a good example of the kinds of behavior I see in partisan humans. I was just describing this exact scenario to someone yesterday. You see something you don't like, it grates on your world view, so you interject yourself into the situation in an offensive way and then use the reaction you create as proof and justification of the attitude you brought to the situation and the viewpoint of the other person.

    You are nothing more than a curiosity at this point. How did your mind get so twisted? I think, just as I stated before, that you present a simulacrum of stupidity, when in truth you have ulterior motives.

    Come clean, speak straight and plainly, and work out your kinks. You will be more effective in life. Cheers!

    --
    When the only tool you have is a claw hammer every problem starts to look like the back of someone's skull.
  78. Re:Meh by Dorianny · · Score: 1
    You are the one using personal attacks and vulgar language to try and degrade the character of someone's opinion you don't like.

    It doesn't work. Bigot!

  79. Re:Meh by Joce640k · · Score: 1

    Whatever. Unemployment around here is at record lows, and my portfolio at record highs. My taxes didn't go up, and freedom didn't go down. Couldn't say that during the 2008-2016.

    All bought and paid for using borrowed money and environmental disasters just so Trump can make himself look good on TV.

    (and some Democrat government will have to try and clean the mess up in the future, after Trump is gone)

    --
    No sig today...