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May
31
answered On doubly graceful permutations
May
24
answered Fibonacci/Lucas Number Congruences
May
20
awarded  Fanatic
May
17
comment Finding the measure of an angle
It doesn't matter, though; your two solutions are just mirror images of each other.
May
14
comment Generating functions for combinatorics
A good point. But there are worse publishers to give your money to than A K Peters.
May
14
comment A simple problem about partition function and Young diagram
Nicolas: you're on the right track.
May
14
answered A simple problem about partition function and Young diagram
May
14
comment Intuitive understanding of why the sum of nth roots of unity is $0$
I came here to give this explanation but I see I was beaten to it. Good job.
May
13
awarded  Nice Answer
May
9
comment If you randomly choose a subset of the real line, what is the probability that it will be measurable?
The answer has to be zero. If not, I don't believe in choice.
May
7
answered Variance for summing over distinct random integers
May
6
comment Is there an unambiguous way to define the average (and higher moments) for a probability density on a circle?
@Didier: basically all I know about directional statistics is that they have a Wikipedia article.
May
6
comment Is there an unambiguous way to define the average (and higher moments) for a probability density on a circle?
There exists something called "directional statistics": en.wikipedia.org/wiki/Directional_statistics .
May
6
comment Does another chain of three squares in this manner exist?
See oeis.org/A031150 and oeis.org/A023110, although there doesn't seem to be a huge amount to work with there.
May
5
comment Optimizing the expectancy
That is, what Ross said.
May
5
comment Optimizing the expectancy
Obvious generalization time: for $k$ stations, I'm guessing that the optimal locations are at $1/(2k), 3/(2k), \ldots, (2k-1)/(2k)$, by this same proof but with more variables.
May
4
answered A combinatorial card problem
May
3
comment Is the $\sum\sin(n)/n$ convergent or divergent?
How does one prove that formula for the sum? I'm guessing that writing $sin(n) = (e^{in} - e^{-in})/(2i)$ and then following your nose gives the result, but I haven't tried it.
May
3
comment Need a result of Euler that is simple enough for a child to understand
There's a nice bijection between the two, as well, which usually goes under the name of "Glaisher's bijection".
May
3
revised $N^L$ vs. ${N+L\choose N}$
added 10 characters in body