Re:Who cares about decimal?
on
RMS Turns 50
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· Score: 1
I use this stuff for math contests all the time.
Ever heard of the Putnam Competition?
The Numbers are the set N = { 0={}, 1={0}, 2={0,1}, 3={0,1,2},... }. The set Z is the closure of N under the group operation +.
Integers are the roots of polynomials with coefficients in Z and leading coefficient 1.
Of course, these words are used differently in different contexts; the point of my original post was to illustrate that the meaning of "square" depends upon the ring you're used to working with.
Re:Who cares about decimal?
on
RMS Turns 50
·
· Score: 1
Two points: 1. -5000 isn't a number. Numbers are non-negative real integers. 2. i is an integer.
Re:Who cares about decimal?
on
RMS Turns 50
·
· Score: 1
50 is the smallest number that can be expressed as the sum of 2 squares in two different ways: 5^2 + 5^2 = 7^2 + 1^2 = 50
They would have to be retrained no matter what. You cannot go from Windows 95 to any NT-based Windows without a learning curve.
True... except that many employees (certainly not all, but enough to have an impact on costs) would already have been using Windows XP elsewhere (eg, at home).
I realise I've gone offtopic now, I just wanted to prove what a useful tool the 'net can be. Two people a few tens of yards away from each other can now communicate via a server in America, ain't technology wonderful?:-)
Unforunately, I'm living out this year, down Abingdon road. The college's accomodation policy really screws graduate students.
"Eric Raymond called SCO's move 'deeply stupid...'"
During a talk here in Oxford University's computing lab, Eric Raymond proclaimed that "UNIX died because it was closed-source", and then refused to accept that Microsoft's multi-billion dollar success suggested that otherwise.
Ever since then, I've taken ESR's pronouncements with several grains of salt.
No. Angular momentum is conserved. Rotational energy is not necessarily conserved -- if you heat up the Earth, the athmosphere will expand, the earth's rotation will slow down, and the total rotational energy will increase -- but the angular momentum remains constant.
That is, it remains constant in a closed system. The only long-term changes to the earth's rotation come from the earth's angular momentum being transferred to the moon.
While I suspect the parent post was intended as humour, it raises a good point: How carefully do people look over contributed code before including it?
Especially in the case of projects like this, I can see a significant danger of someone deliberately introducing a "mistake" which could completely compromise the system's security. With off-by-one errors routinely being found many years after they were initially introduced, I suspect that such an attempt could easily be successful.
This paper is *six* pages long, and Ian Foster has *sixteen* self-citations.
I know some insitutions rank their faculty based on the number of times their papers are cited, but they usually exclude self-citations in those counts.
Notice how the people scammed all actually had thousands in savings.. a sign that the greedy people aren't the poor, they're the already rich
Bad statistics. The people scammed all had money (to begin with) because the people running these scams don't bother with people who don't have money.
Rich people, historically, have been more likely to die in Concorde plane crashes, but that doesn't mean that rich people enjoy flying on Concorde jets more; it just means that the poor never get onto concorde jets in the first place.
6th best mathematical student in the whole of North America
Assuming you're talking about the Putnam (which isn't really a fair benchmark -- it's heavily weighted in favour of discrete mathematics, which happens to be what I'm good at), I was "in the top 6", not necessarily 6th. The competition organizers refuse to give out the exact ranking of the people in the top 6, instead just ranking us all at "Putnam Fellows".
I thought at first glance that there were several Colin Percivals being described by Google, but now I see it's just one.
No, there are several. There's one here involved in petroleum exploration, and another one doing tech support in Lancashire. There's also a Colin Percival involved in marketing for an Australian engineering firm, and another Australian Colin Percival who died in 1992.
Of course, the rest of us might actually have to do a bit more singing and dancing.
Not necessarily. Most jobs are not filled by someone who mailed in a resume; most jobs are filled by someone who was personally recommended by a friend or cow-orker of the person doing the hiring.
In the past, this would have meant being told "company X has a job you might be interested in, send them a resume"; in many cases it is now possible for company X to find enough basic information about you to invite you for an interview without asking for a resume first.
Of course, this does depend upon you not being confused with someone else of the same name; I know of three people who share my name, but fortunately (for me) their web presences are quite limited.
I draw the line at my name. If that, and Google, isn't enough for a potential employer to know if they are interested enough to interview me, I'm not interested in working for them.
Sure, they'll need to know more details eventually; but that can wait until after I've met them in person.
The obvious and more scalable way to do this is the way Debian, and several other *NIX vendors do it... Have a list of available updates that the client downloads from the vendor.
How, exactly, is this more scalable? It works fine for something like Debian which has a few thousand updatable objects, but Windows has a few hundred thousand updatable objects.
Having the client download a full updates index would waste a lot of bandwidth.
That's just because you're only using cvsup to update your source tree. If you have local patches to your source tree, the cvsup server will be told about them.
Personally, I like the way cvsup works. You ask for what you need and a file list. Or so it seems.
cvsup is far more invasive than Windows Update. When you run cvsup, it sends a list of all your files (in the relevant directory, of course) to the server. The server then looks at the list you're sending it and decides what you need to have updated.
I have to say that it's not nearly as scary as advertised. There are two complaints: 1. The Windows Update tool sends to Microsoft a complete list of what hardware you have. 2. If the Windows Update server claims to have an update available for product X, the Windows Update tool will check to see if you have product X installed, and report back to Microsoft.
Well, *duh*. The only way to avoid doing this would involve downloading a complete list of all the updates available for every supported piece of hardware or software. Based on the size of the windows HCL, I'd guess that this would require tens of megabytes of bandwidth -- all so that Windows Update could pick out the half dozen entries which are relevant.
Slashdot Mirror
I use this stuff for math contests all the time.
... }. The set Z is the closure of N under the group operation +.
Ever heard of the Putnam Competition?
The Numbers are the set N = { 0={}, 1={0}, 2={0,1}, 3={0,1,2},
Integers are the roots of polynomials with coefficients in Z and leading coefficient 1.
Of course, these words are used differently in different contexts; the point of my original post was to illustrate that the meaning of "square" depends upon the ring you're used to working with.
Two points:
1. -5000 isn't a number. Numbers are non-negative real integers.
2. i is an integer.
50 is the smallest number that can be expressed as the sum of 2 squares in two different ways: 5^2 + 5^2 = 7^2 + 1^2 = 50
What about 2^2 + 2^2 = 3^2 + I^2 = 8?
Can we wait until *after* the release before announcing it?
Remember, that means wait until you get a PGP-signed email from Murray Stokely before you post a story.
The same thing as happened to Windows 99 through 1999.
According to ESR it did. ;)
They would have to be retrained no matter what. You cannot go from Windows 95 to any NT-based Windows without a learning curve.
True... except that many employees (certainly not all, but enough to have an impact on costs) would already have been using Windows XP elsewhere (eg, at home).
Where was the open source operating system which UNIX had to compete against in the early 80s?
I realise I've gone offtopic now, I just wanted to prove what a useful tool the 'net can be. Two people a few tens of yards away from each other can now communicate via a server in America, ain't technology wonderful? :-)
Unforunately, I'm living out this year, down Abingdon road. The college's accomodation policy really screws graduate students.
"Eric Raymond called SCO's move 'deeply stupid...'"
During a talk here in Oxford University's computing lab, Eric Raymond proclaimed that "UNIX died because it was closed-source", and then refused to accept that Microsoft's multi-billion dollar success suggested that otherwise.
Ever since then, I've taken ESR's pronouncements with several grains of salt.
No. Angular momentum is conserved. Rotational energy is not necessarily conserved -- if you heat up the Earth, the athmosphere will expand, the earth's rotation will slow down, and the total rotational energy will increase -- but the angular momentum remains constant.
That is, it remains constant in a closed system. The only long-term changes to the earth's rotation come from the earth's angular momentum being transferred to the moon.
IANAL, but that site rather screams "parody" to me.
While I suspect the parent post was intended as humour, it raises a good point: How carefully do people look over contributed code before including it?
Especially in the case of projects like this, I can see a significant danger of someone deliberately introducing a "mistake" which could completely compromise the system's security. With off-by-one errors routinely being found many years after they were initially introduced, I suspect that such an attempt could easily be successful.
Obviously you meant 900+ megabits per second; but you're wrong.
900 megabits per second is 77.76 terabits per day, or 9.72 terabytes per day -- almost ten times the volume of data SLAC is generating.
This paper is *six* pages long, and Ian Foster has *sixteen* self-citations.
I know some insitutions rank their faculty based on the number of times their papers are cited, but they usually exclude self-citations in those counts.
Notice how the people scammed all actually had thousands in savings.. a sign that the greedy people aren't the poor, they're the already rich
Bad statistics. The people scammed all had money (to begin with) because the people running these scams don't bother with people who don't have money.
Rich people, historically, have been more likely to die in Concorde plane crashes, but that doesn't mean that rich people enjoy flying on Concorde jets more; it just means that the poor never get onto concorde jets in the first place.
6th best mathematical student in the whole of North America
Assuming you're talking about the Putnam (which isn't really a fair benchmark -- it's heavily weighted in favour of discrete mathematics, which happens to be what I'm good at), I was "in the top 6", not necessarily 6th. The competition organizers refuse to give out the exact ranking of the people in the top 6, instead just ranking us all at "Putnam Fellows".
I thought at first glance that there were several Colin Percivals being described by Google, but now I see it's just one.
No, there are several. There's one here involved in petroleum exploration, and another one doing tech support in Lancashire. There's also a Colin Percival involved in marketing for an Australian engineering firm, and another Australian Colin Percival who died in 1992.
Uhm, so how do employers signal to you that they're interested in the interview? Smoke signals?
Well, this would be a good start...
Of course, the rest of us might actually have to do a bit more singing and dancing.
Not necessarily. Most jobs are not filled by someone who mailed in a resume; most jobs are filled by someone who was personally recommended by a friend or cow-orker of the person doing the hiring.
In the past, this would have meant being told "company X has a job you might be interested in, send them a resume"; in many cases it is now possible for company X to find enough basic information about you to invite you for an interview without asking for a resume first.
Of course, this does depend upon you not being confused with someone else of the same name; I know of three people who share my name, but fortunately (for me) their web presences are quite limited.
I draw the line at my name. If that, and Google, isn't enough for a potential employer to know if they are interested enough to interview me, I'm not interested in working for them.
Sure, they'll need to know more details eventually; but that can wait until after I've met them in person.
The obvious and more scalable way to do this is the way Debian, and several other *NIX vendors do it... Have a list of available updates that the client downloads from the vendor.
How, exactly, is this more scalable? It works fine for something like Debian which has a few thousand updatable objects, but Windows has a few hundred thousand updatable objects.
Having the client download a full updates index would waste a lot of bandwidth.
That's just because you're only using cvsup to update your source tree. If you have local patches to your source tree, the cvsup server will be told about them.
Personally, I like the way cvsup works. You ask for what you need and a file list. Or so it seems.
cvsup is far more invasive than Windows Update. When you run cvsup, it sends a list of all your files (in the relevant directory, of course) to the server. The server then looks at the list you're sending it and decides what you need to have updated.
I have to say that it's not nearly as scary as advertised. There are two complaints:
1. The Windows Update tool sends to Microsoft a complete list of what hardware you have.
2. If the Windows Update server claims to have an update available for product X, the Windows Update tool will check to see if you have product X installed, and report back to Microsoft.
Well, *duh*. The only way to avoid doing this would involve downloading a complete list of all the updates available for every supported piece of hardware or software. Based on the size of the windows HCL, I'd guess that this would require tens of megabytes of bandwidth -- all so that Windows Update could pick out the half dozen entries which are relevant.
Hint: Win95 filename mangling.