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Fedor Petrov's user avatar
Fedor Petrov's user avatar
Fedor Petrov's user avatar
Fedor Petrov
  • Member for 13 years, 3 months
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All Questions Answers
Score Newest
question
165
17 camels trick
Jun 7, 2017
answer
69
integral of a "sin-omial" coefficients=binomial
Nov 19, 2016
answer
58
Examples of notably long or difficult proofs that only improve upon existing results by a small amount
Sep 6, 2018
question
54
If any open set is a countable union of balls, does it imply separability?
Sep 18, 2014
answer
51
The number $\pi$ and summation by $SL(2,\mathbb Z)$
Sep 16, 2016
answer
43
Prove that expression is integer
Jul 12, 2015
answer
40
A curious sin-integral
Jun 16, 2017
answer
39
Does there exist a graph with maximum degree 8, chromatic number 8, clique number 6?
Oct 18, 2017
answer
39
Important formulas in combinatorics
Aug 17, 2015
question
37
When factors may be cancelled in homeomorphic products?
May 29, 2010
Top network posts
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25
Does $8a+5$ ever divide $b^2+8$?
11
Can we partition the plane like this?
7
Prove $ae^{\frac{x}{a}} + be^{-\frac{x}{b}}\leq e^{\frac{x^2}{8a^2b^2}}, \forall x \in \mathbb{R}$ if $a, b > 0; a + b = 1$
6
Trace of symmetric positive semidefinite matrix when diagonalized (as a bilinear form) in a non-orthogonal basis
6
How to prove specific inequality, assuming $\prod\limits_{i=1}^{n}(a_{i}-1)=1$

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