A similar question could be asked about computers, in the 1950's. Electric cars are very likely something that will be needed in the future. The more that gets done on them now, the cheaper they will be in the future. These first few cars will be expensive, yes, but that goes for most prototype cars.
Running a.com file (Compiled Executable) from an untrusted source is always a bad idea. Many of the programs at Pouet.net and Scene.org will cause antivirus programs to flag.
Although it's beyond my skills, the.com file can be run through a decompiler.
There are a few hundred comments at Pouet about synchroplastikum, with several analyzing this very issue. Also, Calodox is an extremely respected programmer. He probably uses some extreme programming tricks to get this particular incredible demo to work, which AVG is good to be suspicious of.
The original site for the article seems to be slashdotted... but it pretty closely followed the Top Ten list at pouet.net. I'vel already forgotten which "unpopular" demos he included.
My own article, mentioned above, is a better list of good demos, in my own humble opinion.
The author of this Popular Science article, Theo Gray, also recently relaunched http://www.periodictable.com/ Thousands of elemental pictures and videos are available there, all linked in with his Popular Science series.
The paper at the heart of this slashdot discussion deals directly with
http://www.wolframscience.com/nksonline/page-884
There are 256 boolean expressions on this page from Stephen Wolfram's book
The paper claims to give 44 shorter expressions.
The Wolfram Functions site
on
Open Source Math
·
· Score: 2, Informative
Much of the guts of Mathematica -- the high level functions -- are available for perusal at http://functions.wolfram.com/ Much of the reason why Mathematica works so well is due to careful consideration of branch cuts.
For example, what is Log[a b]? If you look in almost any math book, you'll find
Log[a b] = Log[a] + Log[b]. That works fine most of the time, but tends to fail
in devastating ways when combined with other functions. The open source programs
tend to follow this "good enough" approach.
Log[a*b] == Log[a] + Log[b] + 2*I*Pi*Floor[(Pi-Arg[a]-Arg[b])/(2*Pi)]
is the very careful way to handle the log function.
I'm posting from Wolfram Research. Basically, a message from
Vaughan Pratt was posted to the correct spot, the FOM list.
Dr. Pratt likely didn't expect his message to get a late night
SlashDot level exposure. A response to his message has already
been sent to the FOM list, but it is a moderated list, and the
response is not visible yet.
Here is a copy of the FOM posting from Todd Rowland, from the
Wolfram prize committee.
http://forum.wolframscience.com/showthread.php?s=&threadid=1472
This is how math is done... trying to poke holes in proofs.
In another experiment, a gamer submerged in water was oblivious to a gradual increase in the temperature of the water. The gamers would continue to happily play until rescued, or until the games were turned off.
I consider myself a scientific conservative -- I don't want to find out what happens
when CO2 hits the 430 ppm mark. Some people say that nothing bad will happen. They
could be cataclysmically wrong.
This is one of the best short animations I've seen.
It starts with a long, long establishing shot, following a limo on a road during the opening credits, then into Wayne Manor itself, past a new year's band, past the assembled crowd, and finally to the balcony, where the first scene takes place.
This shot is up there with The Birdcage opening, or The Player opening, or Rope. And throughout, the devotion of using nothing but construction blocks is strictly adhered to.
I thought Adam West was great. I'd love to see a longer sequel,by this same team.
Google called me a wimp for not answering the non-mathematical questions. At MathWorld News,you can see how Eric and I answered all the other questions.
I own the quantian.org domain. The following is from my article on the Quantian Distribution.
Here is a brief run down of links, programs, and
other goodies in Quantian.
Full disclosure: I work for Wolfram Research. But oh -- the irony! I am also a columnist for Math Games at maa.org, and I wrote an article about the Quantian Distribution. I didn't want a spammer to start using quantian.org just as the distro was getting popular, so I bought it, and provided a redirect to the main Quantian site. So now, I'm getting doubly Slashdotted. Huzzah. A student should definitely be getting Mathematica for Students -- but check with the college first. They might be on a Mathematica Campus, and can get it for free.
It took me over three hours, as well. About an hour into the horrifying process, I was thinking that if I was a criminal, I would already be playing.
In order to play, you have to have Valve's spyware program running on your system. You have to go through 4 separate EULAs. You have to sign yourself up on two different services. An internet connection is mandatory as you play the game. You must give out numerous personal details, put in a long password, and keep the disk in your computer while playing.
Updates are mandatory. If you click the "play" button, you have to wait 50 minutes before the game actually starts.
Far Cry and KOTOR were two other games I registered recently. I think they took 5 minutes.
Yes... Slashdot is directly responsible for us receiving this award. Theo's site (periodictabletable.com) has been updated with some items from the award ceremony, along with a few videos of our scientific experiments with 3 pounds of sodium and a kiddie pool.
It was Slashdot, though, that led the Ignoble committee to my site (mathpuzzle.com), which was hosting the table pictures initially. I thank the Slashdot community for promoting our programming group's conference table.
--Ed Pegg Jr
Slashdot Mirror
Excellent! With that, and the renewal of Venture Bros. for 2 seasons, two of my favorite shows have had their lives extended.
A similar question could be asked about computers, in the 1950's. Electric cars are very likely something that will be needed in the future. The more that gets done on them now, the cheaper they will be in the future. These first few cars will be expensive, yes, but that goes for most prototype cars.
Mathematica 7 has launched, as noted in Stephen Wolfram's blog post. Among the new features are huge equation typesetting, transcendental roots, and discrete calculus. Looking back at the version 6 discussion, it's perhaps inevitable that comparisons will be made to CAR, CGsuite, GAP, Geogebra, Geometer's Sketchpad, Geometry Expressions, Geonext, LaTeX, Magma, Maple, Matlab, nauty, noneuclid, Pari, Sage, or SeifertView. In other news, the Wolfram Demonstrations project now has over 4000 interactive math demos.
Running a .com file (Compiled Executable) from an untrusted source is always a bad idea. Many of the programs at Pouet.net and Scene.org will cause antivirus programs to flag.
Although it's beyond my skills, the .com file can be run through a decompiler.
There are a few hundred comments at Pouet about synchroplastikum, with several analyzing this very issue. Also, Calodox is an extremely respected programmer. He probably uses some extreme programming tricks to get this particular incredible demo to work, which AVG is good to be suspicious of.
The original site for the article seems to be slashdotted... but it pretty closely followed the Top Ten list at pouet.net. I'vel already forgotten which "unpopular" demos he included. My own article, mentioned above, is a better list of good demos, in my own humble opinion.
More really good demoes are compiled at my maa.org article, 64K or less. http://www.maa.org/editorial/mathgames/mathgames_08_16_04.html The main demoscene sites are better though: http://www.scene.org/ and http://www.pouet.net/ . One of my own recent favorites is a 4K demo, synchroplastikum http://www.pouet.net/prod.php?which=20967
If the RIAA didn't deliberately set itself up to be perceived as thuggish criminals, then maybe people could buy CDs without feeling guilty about it.
The author of this Popular Science article, Theo Gray, also recently relaunched http://www.periodictable.com/ Thousands of elemental pictures and videos are available there, all linked in with his Popular Science series.
The paper at the heart of this slashdot discussion deals directly with http://www.wolframscience.com/nksonline/page-884 There are 256 boolean expressions on this page from Stephen Wolfram's book The paper claims to give 44 shorter expressions.
That is a very inflammatory title. The page in question is: http://www.wolframscience.com/nksonline/page-884 Comparing the items in the paper to this page, there isn't much here.
Much of the guts of Mathematica -- the high level functions -- are available for perusal at http://functions.wolfram.com/ Much of the reason why Mathematica works so well is due to careful consideration of branch cuts.
For example, what is Log[a b]? If you look in almost any math book, you'll find Log[a b] = Log[a] + Log[b]. That works fine most of the time, but tends to fail in devastating ways when combined with other functions. The open source programs tend to follow this "good enough" approach.
Log[a*b] == Log[a] + Log[b] + 2*I*Pi*Floor[(Pi-Arg[a]-Arg[b])/(2*Pi)]
is the very careful way to handle the log function.
http://functions.wolfram.com/ElementaryFunctions/Log/16/04/0005/
I'm posting from Wolfram Research. Basically, a message from Vaughan Pratt was posted to the correct spot, the FOM list. Dr. Pratt likely didn't expect his message to get a late night SlashDot level exposure. A response to his message has already been sent to the FOM list, but it is a moderated list, and the response is not visible yet. Here is a copy of the FOM posting from Todd Rowland, from the Wolfram prize committee. http://forum.wolframscience.com/showthread.php?s=&threadid=1472 This is how math is done ... trying to poke holes in proofs.
George Hart's Wolfram Mathematica notebook for Canonicalizing Polyhedra is at the following link:
1 2/
http://library.wolfram.com/infocenter/Articles/20
Wolfram and Hart have been working together for at least a decade.
Integrate[Exp[-a*x + I*b*x]/(x^2 + y^2), {x, 0, Infinity}] // InputForm
gives
If[Im[b] + Re[a] > 0 && (Re[y^2] >= 0 || Im[y^2] != 0),
(Sqrt[y^(-2)]*(2*CosIntegral[(a - I*b)/Sqrt[y^(-2)]]*Sin[(a - I*b)*Sqrt[y^(-2)]*y^2] +
Cos[(a - I*b)*Sqrt[y^(-2)]*y^2]*(Pi - 2*SinIntegral[(a - I*b)/Sqrt[y^(-2)]])))/2,
Integrate[E^(-(a*x) + I*b*x)/(x^2 + y^2), {x, 0, Infinity},
Assumptions -> Re[a] -Im[b] && Im[y^2] == 0 && Re[y^2] 0)]]
Do you want to add any assumptions? What answer are you expecting?
In another experiment, a gamer submerged in water was oblivious to a gradual increase in the temperature of the water. The gamers would continue to happily play until rescued, or until the games were turned off.
Here is a chart of the Carbon Dioxide in the atmosphere, going back to 1973.
ftp://140.172.192.211/ccg/figures/co2_mm_obs.png
http://www.cmdl.noaa.gov/ccgg/insitu.html
I consider myself a scientific conservative -- I don't want to find out what happens when CO2 hits the 430 ppm mark. Some people say that nothing bad will happen. They could be cataclysmically wrong.
More on Ramanujan at St. Andrews
Also at physorg.
It all deals with the Partition function.
This is one of the best short animations I've seen. It starts with a long, long establishing shot, following a limo on a road during the opening credits, then into Wayne Manor itself, past a new year's band, past the assembled crowd, and finally to the balcony, where the first scene takes place. This shot is up there with The Birdcage opening, or The Player opening, or Rope. And throughout, the devotion of using nothing but construction blocks is strictly adhered to. I thought Adam West was great. I'd love to see a longer sequel,by this same team.
Google called me a wimp for not answering the non-mathematical questions. At MathWorld News,you can see how Eric and I answered all the other questions.
Full disclosure: I work for Wolfram Research. But oh -- the irony! I am also a columnist for Math Games at maa.org, and I wrote an article about the Quantian Distribution. I didn't want a spammer to start using quantian.org just as the distro was getting popular, so I bought it, and provided a redirect to the main Quantian site. So now, I'm getting doubly Slashdotted. Huzzah. A student should definitely be getting Mathematica for Students -- but check with the college first. They might be on a Mathematica Campus, and can get it for free.
It took me over three hours, as well. About an hour into the horrifying process, I was thinking that if I was a criminal, I would already be playing. In order to play, you have to have Valve's spyware program running on your system. You have to go through 4 separate EULAs. You have to sign yourself up on two different services. An internet connection is mandatory as you play the game. You must give out numerous personal details, put in a long password, and keep the disk in your computer while playing. Updates are mandatory. If you click the "play" button, you have to wait 50 minutes before the game actually starts. Far Cry and KOTOR were two other games I registered recently. I think they took 5 minutes.
Yes ... Slashdot is directly responsible for us receiving this award. Theo's site (periodictabletable.com) has been updated with some items from the award ceremony, along with a few videos of our scientific experiments with 3 pounds of sodium and a kiddie pool.
It was Slashdot, though, that led the Ignoble committee to my site (mathpuzzle.com), which was hosting the table pictures initially. I thank the Slashdot community for promoting our programming group's conference table.
--Ed Pegg Jr