Search found 671 matches

by notzeb
Sat May 19, 2012 10:05 am UTC
Forum: Mathematics
Topic: After calculus
Replies: 20
Views: 4777

Re: After calculus

If you are into more theoretical stuff, pick up a book on group theory or representation theory.
by notzeb
Wed May 02, 2012 8:53 am UTC
Forum: Mathematics
Topic: Pollock octahedral numbers conjecture.
Replies: 4
Views: 2791

Re: Pollock octahedral numbers conjecture.

Ripped this from wikipedia. wondering if anyone here would be able to prove or disprove it. It's been unproven for 162 years. I'm going to go out on a limb here and guess that no one's going to prove or disprove it in a forum thread. Actually, this problem looks quite approachable. Using the circle...
by notzeb
Sun Apr 15, 2012 11:05 pm UTC
Forum: News & Articles
Topic: SS refuses to pay prostitute, "scandal"
Replies: 47
Views: 9505

Re: SS refuses to pay prostitute, "scandal"

sourmìlk wrote:But because it's called a scandal, it needs a name. What word should we suffix with -gate?
How does "Servicegate" sound?
by notzeb
Wed Apr 04, 2012 5:32 am UTC
Forum: Books
Topic: Harry Potter and the Methods of Rationality
Replies: 1036
Views: 413989

Re: Harry Potter and the Methods of Rationality

Well, it's not settled for me yet I'm afraid. EDIT: Damn, I got pipped at the post. Should have typed faster. :p First of all, Dumbledore didn't actually admit to burning Cissy at all. He admitted to knowing that people thought that was what happened, but he also pointed out that it didn't ...
by notzeb
Wed Mar 28, 2012 2:07 am UTC
Forum: Mathematics
Topic: Theoretical Linear Algebra Question
Replies: 3
Views: 958

Re: Theoretical Linear Algebra Question

Two dimensions is misleading - try three (or more) dimensions.
by notzeb
Tue Mar 27, 2012 9:44 pm UTC
Forum: Mathematics
Topic: Finding the probability of a probability being at least 0.75
Replies: 12
Views: 2943

Re: Finding the probability of a probability being at least

>> The problem is that the prior is chosen arbitrarly. Arbitrarily, but not random. For example, you could use the distribution of Elo-numbers in the population to estimate the distribution of X. If you know anything about Chris, you could update this prior to get a better one. So, I assume we are ...
by notzeb
Fri Mar 23, 2012 6:19 am UTC
Forum: Books
Topic: Harry Potter and the Methods of Rationality
Replies: 1036
Views: 413989

Re: Harry Potter and the Methods of Rationality

Whatever he does do, I'm going to be awfully disappointed if he doesn't
Spoiler:
snap his fingers as he pulls it off
by notzeb
Thu Mar 22, 2012 1:15 am UTC
Forum: General
Topic: What themes dominate the bulk of your dreams?
Replies: 79
Views: 17050

Re: What themes dominate the bulk of your dreams?

The things I have dreamt about in the dreams I remember (I assume the dreams I don't remember are all boring): flying, immortality and true love, accidentally destroying the universe just as I wake up, time travel, vast conspiracies involving Shakespeare, dreams within dreams, a family member dying,...
by notzeb
Sun Mar 11, 2012 10:33 pm UTC
Forum: Religious Wars
Topic: Chess vs. Go Which is the better board game.
Replies: 55
Views: 29725

Re: Chess vs. Go Which is the better board game.

Chess also has a handicap system. usually it's done by removing one of the rooks of the better player from the board (or even the queen) Yeah, but that's a terrible handicap system. It changes the character of the game entirely. A better handicap is that the weaker player gets more time on his cloc...
by notzeb
Sat Mar 03, 2012 9:21 am UTC
Forum: Mathematics
Topic: Quick question on basic calculus.
Replies: 50
Views: 6896

Re: Quick question on basic calculus.

So, I've been studying calculus at high school and there's this problem that bothers me. For instance ∫x 2 *2x dx=∫x 2 *(x 2 )' dx=x 2 Can't I write that as ∫x 2 d(x 2 )? I'm basing my idea on the fact that (x 2 )' can also be written as d(x 2 ) /dx , although in my country teachers never use that ...
by notzeb
Thu Mar 01, 2012 6:42 am UTC
Forum: Books
Topic: I'd like to know the name of this book/short story/comic
Replies: 666
Views: 271102

Re: I'd like to know the name of this book/short story/comic

I read this book about 5 years ago but I believe it was old at the time. Book is about the life of a time traveler who learns that his race specifically time travels and destroys or limits technological abilities of other species to ensure nobody can ever challenge them. He goes about ending this p...
by notzeb
Wed Feb 22, 2012 9:04 am UTC
Forum: Computer Science
Topic: Proving Correctness of Algorithm using Hoare
Replies: 5
Views: 2743

Re: Proving Correctness of Algorithm using Hoare

How about Edmond's matching algorithm?
by notzeb
Wed Feb 15, 2012 4:42 am UTC
Forum: Religious Wars
Topic: Chess vs. Go Which is the better board game.
Replies: 55
Views: 29725

Re: Chess vs. Go Which is the better board game.

anishgiri wrote:
notzeb wrote:There is only one way to settle this - I challenge you to a game of chess.


Call where do you play? I play in FICS.
I just set up an account (notzeb) on FICS. What's your handle? What time do you play?
by notzeb
Fri Feb 10, 2012 4:52 am UTC
Forum: Religious Wars
Topic: Chess vs. Go Which is the better board game.
Replies: 55
Views: 29725

Re: Chess vs. Go Which is the better board game.

anishgiri wrote:
notzeb wrote:This reminds me of a story about a certain frog who lived in a well...


This post reminds me of a boy, who does not have a clue(or idea) of something he read.
There is only one way to settle this - I challenge you to a game of chess.
by notzeb
Thu Feb 09, 2012 3:19 am UTC
Forum: Religious Wars
Topic: Chess vs. Go Which is the better board game.
Replies: 55
Views: 29725

Re: Chess vs. Go Which is the better board game.

I do think chess is a better game. I like the elegance and art of a chess battle(how you form plans etc). For those who are not familiar there are many chess concepts like prophylaxis, opposition rule, minority attack, weak square, weak pawns, bad bishop, exchange sacrifice hanging pawns etc. I lik...
by notzeb
Wed Feb 01, 2012 12:15 am UTC
Forum: Mathematics
Topic: Normal Subgroups of the Free Group
Replies: 4
Views: 3411

Re: Normal Subgroups of the Free Group

Ok, here's another example. Map the free group to S_3 by mapping a and b to different transpositions. The kernel is the smallest normal subgroup containing a^2, b^2, and (ab)^3. A generating set of the kernel is contained in {a^2, b^2, (ab)^3, ba^2b, ab^2a, (ba)^3, (bab)^2, (aba)^2, (ab)^2(ba)^2, (b...
by notzeb
Tue Jan 31, 2012 10:50 pm UTC
Forum: Mathematics
Topic: Normal Subgroups of the Free Group
Replies: 4
Views: 3411

Re: Normal Subgroups of the Free Group

The set of all words with even length is a normal subgroup of index two... if the generators of your free group are a, b, then this subgroup is generated by a^2, b^2, and ab. More generally, pick any finite group, map the free group into it any way you like, and take the kernel of that map. That ker...
by notzeb
Fri Jan 06, 2012 10:13 pm UTC
Forum: General
Topic: Important question: polar bears, or tanks?
Replies: 32
Views: 4507

Re: Important question: polar bears, or tanks?

Unfortunately, no.
by notzeb
Fri Jan 06, 2012 9:11 am UTC
Forum: General
Topic: Important question: polar bears, or tanks?
Replies: 32
Views: 4507

Important question: polar bears, or tanks?

Who would win?

To make the question more precise, imagine the polar bear and the tank (or maybe there are more than one of each?) start out pretty far away from each other, the tank pointing at the polar bear, the polar bear aware of the tank, and for some reason they are pissed at each other.
by notzeb
Tue Dec 27, 2011 2:30 am UTC
Forum: Books
Topic: I'd like to know the name of this book/short story/comic
Replies: 666
Views: 271102

Re: I'd like to know the name of this book/short story/comic

Kewangji wrote:
notzeb wrote:stuff

H.C. Andersen, maybe?
Nope...

Someone was finally able to identify this for me irl: it was Saki.
by notzeb
Sat Dec 24, 2011 9:24 am UTC
Forum: Books
Topic: I'd like to know the name of this book/short story/comic
Replies: 666
Views: 271102

Re: I'd like to know the name of this book/short story/comic

Hmm, I've got one. It was this collection of vignettes all by the same author (my memory keeps insisting that the author had a three letter name, something like Lum?), that I found in my grandmother's house while I was in middle school. There was no supernatural or fantastical element, and none of t...
by notzeb
Wed Dec 21, 2011 6:13 am UTC
Forum: Mathematics
Topic: How come there is no such thing as 1 dimensional geometry?
Replies: 14
Views: 3780

Re: How come there is no such thing as 1 dimensional geometr

Over the complex numbers, if you throw in the point at infinity, 1-dimensional geometry becomes inversive geometry, the geometry of circles and lines. If you just look at the real line, I guess you could probably still have fun looking at cross ratios and stuff. For instance, how many quadruples of ...
by notzeb
Thu Dec 15, 2011 2:38 am UTC
Forum: Mathematics
Topic: extracurricular maths for 2nd year undergrad
Replies: 4
Views: 1280

Re: extracurricular maths for 2nd year undergrad

If you like analysis, how about proving some results about which functions have integrals that are elementary functions? Maybe you could get into a little bit of differential galois theory.
by notzeb
Wed Nov 23, 2011 7:48 pm UTC
Forum: Mathematics
Topic: Requesting Inequalities and Tips to Solving Them
Replies: 9
Views: 2541

Re: Requesting Inequalities and Tips to Solving Them

For entry level inequalities, the most important things to learn are probably the Cauchy-Schwarz inequality and the AM-GM inequality. The key to many inequalities is turning them into the "trivial inequality": no square is negative. Example: (x-y)^2 is a square, so it's at least zero. Expa...
by notzeb
Fri Nov 18, 2011 10:23 pm UTC
Forum: Language/Linguistics
Topic: Understanding Chinese?
Replies: 9
Views: 4341

Re: Understanding Chinese?

I can't understand the lyrics of many songs in English (my native language) without listening to them over and over and over. And even then, sometimes I still need someone to point out that I've misheard them all along.
by notzeb
Fri Nov 04, 2011 6:29 am UTC
Forum: Logic Puzzles
Topic: How much money?
Replies: 13
Views: 3404

Re: How much money?

I pick x = 1000, because my utility curve starts flattening out around a million dollars.
by notzeb
Thu Nov 03, 2011 3:19 am UTC
Forum: Logic Puzzles
Topic: x^x^x^x^x=5?
Replies: 30
Views: 12602

Re: x^x^x^x^x=5?

Inverse Symbolic Calculator says no dice:

http://oldweb.cecm.sfu.ca/cgi-bin/isc/l ... ype=simple
by notzeb
Thu Oct 27, 2011 8:03 am UTC
Forum: Mathematics
Topic: What do you think the most underrated area of math is?
Replies: 13
Views: 4050

Re: What do you think the most underrated area of math is?

Some contenders:

- The Umbral Calculus
- Tauberian Theorems
- Arakelov Theory
- Fewnomial Theory
- Functional Equations
- Tropical Geometry
- Sieve Theory
- Sturmian Words
- Dessins d'enfants
- Bubbles
by notzeb
Wed Sep 14, 2011 7:32 am UTC
Forum: General
Topic: Hypothetically would you fight god to save your soulmate?
Replies: 92
Views: 13178

Re: Hypothetically would you fight god to save your soulmate

I would pull out the bible in front of god and state: "If I am permitted anything I want in Heaven than I would like my soulmate back, and if you refuse, than this is a breach of contract and I want my life back. "What contract? You think that a poor translation of the written record of s...
by notzeb
Tue Sep 13, 2011 9:46 am UTC
Forum: Gaming
Topic: GO weiqi igo baduk
Replies: 154
Views: 62355

Re: GO....

Yes That's great. And no offence, but can I get a second opinion? Second opinion: no, white won't capture all of the black stones. He/she will, instead, take all of the black stones on the left hand side of the board. (The black stones in the upper right hand corner are clearly unkillable, assuming...
by notzeb
Tue Sep 13, 2011 7:44 am UTC
Forum: General
Topic: Hypothetically would you fight god to save your soulmate?
Replies: 92
Views: 13178

Re: Hypothetically would you fight god to save your soulmate

Lets say a scenario of any kind of events that follow christian law for evil are commited by your soulmate and she/he is sent to punishment, would you fight against God to save her soul from hell? Assuming a Christian god, I'd probably fight to save my soulmate from heaven as well. We've got better...
by notzeb
Sun Aug 21, 2011 12:26 pm UTC
Forum: Logic Puzzles
Topic: Looking for hard and rare logic puzzles
Replies: 60
Views: 20753

Re: Looking for hard and rare logic puzzles

This thread reminds me of this.

This puzzle and this one are both classics as well (I like to give the second one along with the challenge of finding a way to trick the devil despite apparently being in a losing position).
by notzeb
Tue Jun 21, 2011 1:14 am UTC
Forum: Mathematics
Topic: Interesting Problems?
Replies: 33
Views: 4766

Re: Interesting Problems?

There is the Diophantine Equation: y^3 = x^2 + 2, which has only one solution, and that solution is easy enough to find. The interesting bit is that the proof that this is the only solution is quite tricky(I do not know the proof and am attempting to find it at present, so I do not wish to spoil it...
by notzeb
Sat Jun 11, 2011 11:46 pm UTC
Forum: Mathematics
Topic: Function fields and local parameters
Replies: 3
Views: 1236

Re: Function fields and local parameters

I'm currently writing my bachelor thesis on the topic of projective curves and function fields, with a focus on the theorem of Riemann-Roch. Although I've been reading an abundance of books on the topic there's still two questions I have right now that I haven't found a satisfying answer to. First ...
by notzeb
Sat Jun 11, 2011 9:50 pm UTC
Forum: General
Topic: Anyone else think blackmail should be legal?
Replies: 115
Views: 16504

Re: Anyone else think blackmail should be legal?

http://en.wikipedia.org/wiki/Blackmail http://www.walterblock.com/wp-content/uploads/publications/block_blackmail-as-a-victimless-crime-1999.pdf http://www.walterblock.com/wp-content/uploads/publications/block_blackmailing-for-mutual-good-reply-to-hardin-2000.pdf I was always thought blackmail bein...
by notzeb
Sat Jun 04, 2011 5:38 am UTC
Forum: Mathematics
Topic: Collatz conjecture solved?
Replies: 2
Views: 2306

Re: Collatz conjecture solved?

I just skimmed over the paper. Near as I can tell, what happened is that Berg and Meinardus found a pair of functional equations that encoded the Collatz problem, and the author of this paper is just unraveling the equivalence between the pair of functional equations and the Collatz conjecture, then...
by notzeb
Fri Jun 03, 2011 5:52 am UTC
Forum: Fictional Science
Topic: How would you make a properly mathy magic system?
Replies: 25
Views: 7059

Re: How would you make a properly mathy magic system?

Which has me wondering, how could you design a properly magical system, where casting is mathematical? The correct answer is Category Theory. Drawing the right diagrams can have drastic consequences. I once saw a master mathematician chase through the all of the arrows in a spectral sequence; the n...
by notzeb
Wed Apr 06, 2011 5:10 pm UTC
Forum: Mathematics
Topic: Theorem being undecidable question
Replies: 8
Views: 1276

Re: Theorem being undecidable question

I've got a background in abstract algebra, but I went many years without it...now I"m back in college and reading some popular math texts. Anyhow, I recently encountered in a math book that said that in standard set theory with the axiom of choice included (ZFC), the Continuum Hypothesis (CH) ...
by notzeb
Thu Mar 17, 2011 5:52 pm UTC
Forum: Mathematics
Topic: The Tau Manifesto
Replies: 165
Views: 44775

Re: The Tau Manifesto

You know, for some reason I saw the thread title and I was certain it would be about how much muons suck.

Hey, while we're changing mathematical conventions, can we get rid of that annoying off by one problem in the Gamma function by switching to the Pi function? This way Pi still gets some love.
by notzeb
Thu Dec 02, 2010 8:28 pm UTC
Forum: Serious Business
Topic: A different voting system... Juror-style voters
Replies: 48
Views: 5974

Re: A different voting system... Juror-style voters

I see one big problem with this voting system: lack of anonymity.

The mafia party doesn't win the vote unanimously? All 5000 randomly selected voters mysteriously end up dead.

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