MathOverflow
Takahiro Waki
  • Member for 6 years, 4 months
  • Last seen more than 2 years ago
  • 日本神奈川県Yokosuka-shi
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About

I straightly say ordinary japanese.I say japanese honest opinion.I always fight with discussions on wikipedia.Also I recommend lang-8.com.I am on active in knowledge sites more than 4.

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7
What are some of the big open problems in 3-manifold theory?
Jun 16 '16
2
Does one pieces of every kind of connected polyominoes P in $\mathbb{R}^2$ which has no hole cover a plane?
May 1 '17
1
Journals for undergraduates
Jan 22 '17
-3
Is it possible to find all integer functions which satisfy $f(m!+n!)\mid f(m!)+f(n!)$ and $m+n \mid f(m)+f(n)$?
Oct 29 '16
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11
Nested sudoku in entrance exam
10
On Ramanujan's curious equality for $\sqrt{2\,(1-3^{-2})(1-7^{-2})(1-11^{-2})\cdots} $
6
Number of pairs of rational numbers that satisfy the given relation
5
Where can I get a list of important theorems for Math Olympiads?
5
Example of a hexagon inscribed in a circle

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