8,236 reputation
1534
bio website vyznev.net
location Helsinki, Finland
age
visits member for 2 years, 1 month
seen 13 hours ago
stats profile views 629

I like programming in Perl and C. I know Java and PHP too (I'm a MediaWiki developer), but I can't really say I like them. I keep meaning to learn Python some day, but never seem to get around to it.

I'm working on a Ph.D. in biomathematics. I also like programming puzzles and cryptography.

Please consider any (original) code I post to Stack Overflow (and other Stack Exchange sites) to be released under CC-Zero unless stated otherwise. You may do whatever you want with it and don't have to credit me in any way, although of course that would be nice.


18h
comment Can you raise $\pi$ to a real power to make it rational?
Well... not incorrectly, just imprecisely. "Trivial" is one of the vaguest, most subjective and hand-wavey terms in mathematics; even in specific areas where it does have a reasonably well agreed-upon meaning, that meaning depends entirely on context. Anyway, if you were trying to sound like a working mathematician, I'd say you succeeded. However, I'd also say that's not necessarily something to be proud of. :)
1d
comment 1000 doors, few keys as possible problem
You seem to be implicitly assuming that $P(O_1)=1/1000$. Where did you get that assumption from?
1d
comment Can you raise $\pi$ to a real power to make it rational?
I assume the word "non-trivial" in your question is meant to exclude $\pi^0 = 1$.
1d
comment Big Greeks and commutation
While you have my +1, note that this trick won't generalize well to infinite products. Although one could always write those as explicit limits, e.g. $\dotsb x_2 x_1 x_0 = \lim_{n\to\infty}\prod_{i=0}^n x_{n-i}$.
May
20
awarded  Constituent
May
10
revised is there a name for this function (parity of a finite sequence)?
add notice about crossposting
May
9
comment AI strategies for losing positions
@xisk: I don't really agree that this question is off topic for math.SE; to me it's well within (applied) game theory, which is a field of mathematics. That said, I've flagged it for moderator attention and suggested migration to a more suitable site; in case the request is declined, I've also cast a reopen vote.
May
9
awarded  Analytical
May
9
answered AI strategies for losing positions
May
8
revised Algorithm to separate an array of numbers into “low”, “medium” and “high” ranges
copyedit
May
8
revised Algorithm to separate an array of numbers into “low”, “medium” and “high” ranges
added 585 characters in body
May
8
answered Algorithm to separate an array of numbers into “low”, “medium” and “high” ranges
May
6
awarded  Caucus
May
6
comment Roll a pair of dice..what is the expected value?
For the sum, this is true even if the variables are not independent. For the product you do need independence, however.
May
6
revised Seeking Fourier series solution on Laplace equation…still looking, am I on track?
blockquote, formatting, capitalization
Apr
30
revised Understanding the graph of the displacement of a particle wirh respect to time
edited title
Apr
30
comment the sixth number system
The article on quaternions and spatial rotation is somewhat less abstruse, at least in some parts.
Apr
26
comment Why is every answer of $5^k - 2^k$ divisible by 3?
I saw the comments, but really, the amount of modular arithmetic needed for this can be picked up just by looking at the Wikipedia article I linked to (even if it is rather horribly written).
Apr
26
awarded  Nice Answer
Apr
26
answered Why is every answer of $5^k - 2^k$ divisible by 3?