Search found 671 matches

by notzeb
Tue Apr 27, 2010 9:47 am UTC
Forum: School
Topic: Illinois Institute of Technology or Caltech?
Replies: 8
Views: 1670

Re: Illinois Institute of Technology or Caltech?

Caltech is not as challenging as it is made out to be. You will only set your self up for disappointment if you think of it as a magical place where the classes are a thousand times more advanced than anywhere else (and, quantum mechanics and relativity are not as exciting as psuedoscience writers l...
by notzeb
Tue Apr 13, 2010 8:37 am UTC
Forum: Forum Games
Topic: where are you right now?
Replies: 44
Views: 3623

Re: where are you right now?

I am right everywhere except for those places where I am wrong.
by notzeb
Sat Apr 10, 2010 9:19 am UTC
Forum: Mathematics
Topic: Concatenation Factorization in polynomial time
Replies: 1
Views: 557

Re: Concatenation Factorization in polynomial time

hint:

Spoiler:
dynamic programming.


I've said too much.
by notzeb
Sun Mar 28, 2010 8:50 pm UTC
Forum: Forum Games
Topic: Attack of the colanders!
Replies: 3
Views: 942

Re: Attack of the colanders!

kaimason1 wrote:Was that colandered any?
ABORTION.

Was it that metal to stand beneath the authoritys?
by notzeb
Sun Mar 28, 2010 8:44 pm UTC
Forum: Science
Topic: Why would I need to blow up the moon?
Replies: 97
Views: 10815

Re: Why would I need to blow up the moon?

Because the Earth needs a set of rings far more than it needs a moon. Really, how sweet would rings be? I know forming rings is a non-trivial exercise, and may not even be possible, but given that you just blew up the moon, it seems you have a pretty good grasp of these things. And if you need a re...
by notzeb
Fri Mar 26, 2010 5:49 am UTC
Forum: Forum Games
Topic: Attack of the colanders!
Replies: 3
Views: 942

Attack of the colanders!

Oh no! The modules have gone PERFECTLY SANE THANK YOU VERY MUCH, tooling a colander for every other talking-bit we sort in this yarn!

Just baby goatding. Beauty supply your own colanders and exert them to your wooden stakes in this yarn!
by notzeb
Fri Mar 26, 2010 5:14 am UTC
Forum: School
Topic: "When am I going to use this?"
Replies: 127
Views: 23372

Re: "When am I going to use this?"

Blah, blah, blah...

You'll use it when you're DEAD!
by notzeb
Fri Mar 19, 2010 10:21 am UTC
Forum: General
Topic: How'd you come up with your username(s)?
Replies: 1405
Views: 245852

Re: How'd you come up with your username(s)?

My username isn't zeb.
by notzeb
Thu Mar 18, 2010 8:04 am UTC
Forum: News & Articles
Topic: Macroscopic Quantum System!
Replies: 9
Views: 2770

Re: Macroscopic Quantum System!

um, if it's big enough that you can see it, wouldn't the constant bombardment with photons cause it to decohere almost instantly? Or have they cheated by not letting you look at it, but "it's big enough that you could see it"? I didn't RTFA so maybe someone can read it for me and explain?
by notzeb
Wed Mar 17, 2010 11:21 pm UTC
Forum: Logic Puzzles
Topic: Bear Puzzle
Replies: 23
Views: 17920

Re: Bear Puzzle

Hint: as well as deducing geographical information from the falling time (i.e. centrifugal forces, gravitational anomaly), the official solution also used other facts about the habitats of bears, the difficulties involved in digging a trap, and the motivations for trapping them... But, I thi...
by notzeb
Wed Mar 17, 2010 12:42 pm UTC
Forum: Logic Puzzles
Topic: Bear Puzzle
Replies: 23
Views: 17920

Re: Bear Puzzle

Yat wrote:This problem was solved here :

http://forums.xkcd.com/viewtopic.php?f= ... 80&start=0
No, it wasn't.
by notzeb
Wed Mar 17, 2010 5:55 am UTC
Forum: Logic Puzzles
Topic: Bear Puzzle
Replies: 23
Views: 17920

Bear Puzzle

A friend of mine gave me this puzzle, but I'm not sure if his solution is correct: A bear falls into a trap that is exactly 19.617 meters deep. The falling time is exactly two seconds. What is the color of the bear? Note that it is not enough to guess the right color; you also need to give reasoning...
by notzeb
Sun Mar 14, 2010 6:34 am UTC
Forum: Religious Wars
Topic: Light side vs Dark side
Replies: 61
Views: 14530

Re: Light side vs Dark side

Imagine an unelected, semi-secret organization that decided that it would control the senate. Senators that disagreed, disappeared. Due to constant assassinations and election riggings (to the point that the Senators from allied plants were actually monarchies), the senate was too weak and ill-equi...
by notzeb
Sun Mar 14, 2010 4:40 am UTC
Forum: School
Topic: "When am I going to use this?"
Replies: 127
Views: 23372

Re: "When am I going to use this?"

Yakk wrote:So read that novel instead of studying math.
You're looking at someone who did exactly that.

Unfortunately there were not enough good novels at my local library so I would occasionally read books on board games or codes or number theory... I was really bored sometimes...
by notzeb
Sun Mar 14, 2010 12:27 am UTC
Forum: Coding
Topic: Mother...
Replies: 9
Views: 1373

Re: Mother...

Another technique that works for 3 dimensions as well as 2 is to choose a random point in the unit circle (or sphere), then normalize it. You can choose a random point uniformly from the unit circle by choosing vx and vy uniformly from [-1, 1], and repeating until vx^2 + vy^2 <= 1. For 2-D I usuall...
by notzeb
Sat Mar 13, 2010 11:24 pm UTC
Forum: Coding
Topic: Mother...
Replies: 9
Views: 1373

Re: Mother...

Choose x and y independently from a Gaussian normal distribution. Then normalize the resulting vector. This works because the probability density of being at point (x,y) is e^(-x^2)*e^(-y^2) = e^(-x^2-y^2) = e^(-r^2), which is rotationally invariant. This trick works in any number of dimensions. Edi...
by notzeb
Sat Mar 13, 2010 8:32 am UTC
Forum: Mathematics
Topic: Rational^irrational can yield irrational
Replies: 27
Views: 8725

Re: Rational^irrational can yield irrational

Let a = 1.101000100000000000..., where the position of the nth 1 after the decimal point is Ackermann(n). Then Liouville's approximation theorem proves that a is transcendental (a*10^(Ackermann(n)) is too close to an integer), and a similar argument to Liouville's approximation theorem proves that 2...
by notzeb
Thu Mar 11, 2010 6:03 am UTC
Forum: Computer Science
Topic: "Computer science" warning symbol.
Replies: 31
Views: 6546

Re: "Computer science" warning symbol.

Bugs? Viruses?

Skynet?
by notzeb
Mon Mar 08, 2010 6:08 am UTC
Forum: Language/Linguistics
Topic: An 18 word contextual language
Replies: 134
Views: 19616

Re: An 18 word contextual language

How would you go about asking for specific things? For example, your wife just makes a pie, a cake, and some brownies. She goes upstairs to ask which you'd like, and you make a stupid comment about women needing to stay in he kitchen. How do you tell her to stop hitting you with said pie, cake, and...
by notzeb
Sun Mar 07, 2010 2:33 am UTC
Forum: Coding
Topic: Typing bytecode?
Replies: 30
Views: 3684

Re: Typing bytecode?

Screw Javascript and Haskell, you should use a high level programming language like this one: http://www.quirkster.com/snusp/snusp-js.html Features include: - Atomic commands - Easy to learn - One character recursion - Turing-complete feature set - I/O that doesn't require the technical machinery of...
by notzeb
Sat Mar 06, 2010 9:27 am UTC
Forum: Comics/Graphic Novels
Topic: How would you make money off your superpower?
Replies: 31
Views: 12147

Re: How would you make money off your superpower?

As deterministic man, I would make a series of arbitrary but nonrandom choices that would lead to me unexpectedly acquiring a large fortune off of the stock market. And I can promise it wasn't just a lucky shot - I am deterministic man, this had a 100% chance of happening from the very beginning! Un...
by notzeb
Sat Mar 06, 2010 8:56 am UTC
Forum: Mathematics
Topic: A unifying theory in mathematics?
Replies: 18
Views: 4017

Re: A unifying theory in mathematics?

The grand unifying theory of mathematics would be the P vs NP conjecture, I think. If P = NP: We can basically solve any solvable mathematical problem by computer given "reasonable" amounts of time. (The problem, "does this statement have a proof that is less than 1+1+1+...+1 characte...
by notzeb
Sat Mar 06, 2010 8:36 am UTC
Forum: Language/Linguistics
Topic: An 18 word contextual language
Replies: 134
Views: 19616

Re: An 18 word contextual language

You know, I have a friend who was describing to me the other day a conversation she was having that went, basically, like this: "Hey, we can't do that thing at that time because of the other thing." "Well how about at the other time?" "But there is the other thing..." &...
by notzeb
Tue Mar 02, 2010 3:45 am UTC
Forum: Science
Topic: Why would I need to blow up the moon?
Replies: 97
Views: 10815

Re: Why would I need to blow up the moon?

To get at those vast, untapped resources of Cheese that have been sitting on the moon, uneaten.

Think about it - with the constant rain of cheese from above, hunger will be eliminated!
by notzeb
Tue Mar 02, 2010 1:41 am UTC
Forum: Mathematics
Topic: Help me solve this game
Replies: 9
Views: 1443

Re: Help me solve this game

Hint (not the solution, only applies to normal play Nim - i.e. the abnormal version of Nim): There is a way to mentally replace a collection of piles with a single pile. For instance, it is possible to think of any position with a pile of size two and a pile of size three and some other piles as a p...
by notzeb
Mon Mar 01, 2010 6:58 am UTC
Forum: Comics/Graphic Novels
Topic: Manga Thread of Pain
Replies: 161
Views: 99482

Re: Manga

So just in case anyone here has bad enough taste to continue reading Bleach (like me)... Oh my god Aizen still hasn't fucking killed any of the good guys, grow some balls Kubo. No one has really died died in Bleach. What do you expect? How does death in Bleach even... work? Aren't they all ghos...
by notzeb
Thu Feb 25, 2010 5:20 am UTC
Forum: Mathematics
Topic: graphing logarithms?
Replies: 6
Views: 1193

Re: graphing logarithms?

draw a graph of y=b^x on transparent paper, and turn the paper over by rotating it around the line y=x. Better to graph x=b^y. Choose values for y, calculate x, and plot (x,y). This "usually" works without the aid of a calculator unlike the change of base formula (the more you can do WITH...
by notzeb
Tue Feb 23, 2010 2:06 am UTC
Forum: Mathematics
Topic: Morphisms of varieties
Replies: 8
Views: 1393

Re: Morphisms of varieties

A morphism from a variety V to affine space A^n is just a vector function of the form f(x) = (f_1(x), ..., f_n(x)), where f_1, ..., f_n are regular functions on V. f_1, ..., f_n are called the coordinates of f for... obvious reasons. Affine space is just another way of saying k^n, where k is whateve...
by notzeb
Tue Feb 23, 2010 1:49 am UTC
Forum: Individual XKCD Comic Threads
Topic: 0704: "Principle of Explosion"
Replies: 104
Views: 32442

Re: "Principle of Explosion" Discussion

bmonk wrote:...so, how can you distinguish which one it the actual value? You can't.
Speak for yourself. Just because you aren't good enough to figure out how to do it doesn't mean everyone else is an idiot.
by notzeb
Sun Feb 21, 2010 9:00 pm UTC
Forum: Mathematics
Topic: Morphisms of varieties
Replies: 8
Views: 1393

Re: Morphisms of varieties

Most definitions in topology are "local," in that a property holds if for every point, we can find an open set around it where that property holds. For example, the definition of "open set" itself is local: a set is open if every point in the set has an open neighborhood containe...
by notzeb
Sun Feb 21, 2010 6:35 am UTC
Forum: Mathematics
Topic: graphing logarithms?
Replies: 6
Views: 1193

Re: graphing logarithms?

draw a graph of y=b^x on transparent paper, and turn the paper over by rotating it around the line y=x.
by notzeb
Sun Feb 21, 2010 3:08 am UTC
Forum: General
Topic: Creative outlets
Replies: 14
Views: 2072

Re: Creative outlets

I draw mazes.
by notzeb
Sat Feb 20, 2010 10:48 am UTC
Forum: Language/Linguistics
Topic: An 18 word contextual language
Replies: 134
Views: 19616

Re: An 18 word contextual language

I don't see why everyone here seems so hung up on whether the dog chased the cat or the cat chased the dog. All I wanted to know was that the animate object performed an action in the direction of the other animate object. Sort of reminds me of the reason some people give for liking books better tha...
by notzeb
Sat Feb 20, 2010 10:32 am UTC
Forum: Individual XKCD Comic Threads
Topic: 0704: "Principle of Explosion"
Replies: 104
Views: 32442

Re: For those having trouble with the logic P^~P=>(your mom)

Terry Tao just buzzed this (you know, the Fields medal winning Mathematician). He has some insights into logic that may help those who are confused on this board. He's certainly more of an authority than anyone here can claim to be, and he's quite a bit more clear. (Hey look, its my first post and ...
by notzeb
Fri Feb 19, 2010 6:17 am UTC
Forum: Individual XKCD Comic Threads
Topic: 0704: "Principle of Explosion"
Replies: 104
Views: 32442

Re: "Principle of Explosion" Discussion

I imagine the derivation went something like this:

Code: Select all

Assume P ^ ~P.
- Then 7+2 = 9, and 72/9 = 8.
- Now assume for contradiction that Mrs. Lenhart's phone number is not 978-448-6872.
-- But then P ^ ~P, contradiction!
- Thus Mrs. Lenhart's phone number must be 978-448-6872.
by notzeb
Wed Feb 17, 2010 5:44 pm UTC
Forum: Mathematics
Topic: Favorite math jokes
Replies: 1452
Views: 493717

Re: Favorite math jokes

Xanthir wrote:If the choice is between "baker is still overcharging customers" and "baker is throwing away 80+% of his bread rather than just baking larger loafs", I know which one sounds more plausible.
You clearly are not a mathematician! [<-- clarification of previous math joke]
by notzeb
Wed Feb 17, 2010 4:51 pm UTC
Forum: Mathematics
Topic: Favorite math jokes
Replies: 1452
Views: 493717

Re: Favorite math jokes

When he was calculating the average weight of his original loaves, they would have formed a rough normal distribution when graphed. Then later, when he got bigger loaves, he kept graphing them, and noticed that they looked suspiciously like the right tail of a bell curve (i.e he could have interpol...
by notzeb
Sun Feb 07, 2010 8:56 pm UTC
Forum: School
Topic: What's Your Major?
Replies: 133
Views: 21204

Re: What's Your Major!?!?!

Notzeb, what school do you go to? Also, is that undergraduate or graduate? The American Samoan School for Mad Science and Engineering. These were some summer research projects for undergraduates that I participated in; most of the grad students don't have time for research as the are busy killing e...
by notzeb
Sun Feb 07, 2010 11:55 am UTC
Forum: School
Topic: What's Your Major?
Replies: 133
Views: 21204

Re: What's Your Major!?!?!

I'm Majoring in Astrobioengineering, with a Minor in Undeclared. A lot of people ask me what Astrobioengineering is. I like to illustrate with an example of the project I worked on recently. We recently discovered - well, designed - a microscopic organism that is capable of eating rock. We quickly f...
by notzeb
Sun Jan 24, 2010 5:54 am UTC
Forum: Forum Games
Topic: This is the title of the first post.
Replies: 112
Views: 9738

This is the title of the second post

This post points out that its title is, in fact, false.

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