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A mediocre professor at a top-notch university making mediocre contributions to this top-notch community


Sep
11
awarded  Good Question
Jul
15
revised Finding rational points at rational distance in the plane
deleted 1 character in body
Jul
15
comment Finding rational points at rational distance in the plane
@QiaochuYuan: Take $p$ to be $(1/\pi, \sqrt{1-1/\pi^2})$. Aren't both coordinates transcendental? And isn't $p$ unit distance from the origin?
Jul
15
asked Finding rational points at rational distance in the plane
Jul
2
awarded  Curious
Apr
12
awarded  Popular Question
Feb
16
awarded  Yearling
Feb
6
revised Expected tail and head length of $\rho$ for a finite random function
edited body
Jan
30
accepted Looking for intuition behind coin-flipping pattern expectation
Dec
9
answered Equivalence Classes of a Relation Given as a Set of Ordered Pairs
Oct
20
awarded  Great Question
Sep
9
answered Fields, closed under two operations
Aug
5
comment Expected length of a sequence that contains all words of a given length.
@ByronSchmuland I think that's the same ref leonbloy cited at the end of his answer below.
Aug
5
revised Determine whether the argument is valid or invalid
typesetting cleanup
Aug
5
answered Determine whether the argument is valid or invalid
Aug
4
comment N white and black balls and N boxes Probability
Given $N$ new users posting $N$ new questions which are worded as demands rather than questions, what is the probability they are all homework problems?
Jul
17
awarded  Popular Question
Jun
29
comment on fibonacci sequence how to prove that $a_n=\frac{1}{\sqrt{5}} ((\frac{1+\sqrt{5}}{2})^n-(\frac{1-\sqrt{5}}{2})^n)$
This is given as a warmup in the free text by Wilf called generatingfunctionology.
Jun
28
comment How to find generator in a finite group?what is generator?
When I said, "suppose you can factor" the "you" is the OP who is (presumably) a human trying to solve a problem. I did not (and would not) say "suppose a factorization exists for $(p-1)$".
Jun
28
answered How to find generator in a finite group?what is generator?