meta user
network profile
| bio | website | gottwurfelt.wordpress.com |
|---|---|---|
| location | San Francisco, CA | |
| age | 29 | |
| visits | member for | 2 years, 10 months |
| seen | 2 days ago | |
| stats | profile views | 801 |
Quantitative analyst and math blogger.
|
Aug 19 |
comment |
Companions to Rudin? I'm not familiar with these. But I found Bergman's companion to Lang's Algebra quite useful when I was studying from that book, so consider that a qualified recommendation for Bergman's course materials in general. |
|
Aug 19 |
comment |
What is the expected number of runs of same color in a standard deck of cards? More generally, a deck with $2k$ cards, $k$ of each color, has expected number of runs $k+1$. |
|
Aug 18 |
comment |
What is the importance of the Collatz conjecture? $500 is a fairly large prize by Erdos' standards. See math.ucsd.edu/~fan/ep.pdf and math.niu.edu/~rusin/known-math/93_back/prizes.erd . (These are the only two lists I could find with dollar figures on them; neither actually includes the Collatz problem.) |
|
Aug 18 |
comment |
Averaging 2 roots of a cubic polynomial Just out of curiosity, which generalizations have you tried? For example, are you averaging two roots of the higher-degree polynomial, or all the roots except one? |
|
Aug 15 |
comment |
Is there a name for $[0,1]$? "Numbers in the unit interval" works. |
|
Aug 14 |
awarded | Commentator |
|
Aug 14 |
comment |
Fundamental group of the double torus However, if the original answer had included the magic words "see Exercise 0.2", this would be a perfectly fine answer. (Note for those who don't follow the link: Baez gives the solution there. I don't think it makes sense to just give a link to where somebody has asked a question.) |
|
Aug 14 |
comment |
Asimov quote about “eight million trillion” arrangements of amino acids Asimov was trained as a chemist. I think he would have known better and someone else made a mistake. |
|
Aug 13 |
answered | Asimov quote about “eight million trillion” arrangements of amino acids |
|
Aug 13 |
answered | Is it possible to 'split' coin flipping 3 ways? |
|
Aug 4 |
comment |
Why is Euler's Gamma function the “best” extension of the factorial function to the reals? The other Gamma functions mentioned here also satisfy that functional equation. |
|
Aug 4 |
comment |
Need faster division technique for 4 digit numbers Not a bad idea, but the gcd is 2, which doesn't help much. |
|
Jul 28 |
comment |
Probability to find connected pixels You are attempting to do what's known as "polyomino enumeration". This is in general quite difficult. |
|
Jul 28 |
answered | Visualising functions from complex numbers to complex numbers |
|
Jul 27 |
awarded | Beta |
|
Jul 26 |
comment |
n out of m theorems (some imply the rest) I suspect that many examples of this phenomenon have m-n = 1 -- that is, that if all but one of a list of conditions holds, then all of them hold. |
|
Jul 25 |
comment |
When you randomly shuffle a deck of cards, what is the probability that it is a unique permutation never before configured? What BBischof said is correct. |
|
Jul 25 |
answered | When you randomly shuffle a deck of cards, what is the probability that it is a unique permutation never before configured? |
|
Jul 24 |
comment |
Is there a relationship between e and the sum of n-simplexes volumes? This seems like the sort of thing that might be mentioned at the blog "The n-category cafe", although I wouldn't know how to begin looking for it there. |
|
Jul 24 |
comment |
Is there a closed-form equation for $n!$? If not, why not? I know it's unsatisfying. |
