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Takahiro Waki's user avatar
Takahiro Waki's user avatar
Takahiro Waki's user avatar
Takahiro Waki
  • Member for 8 years, 6 months
  • Last seen more than 4 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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Top posts
answer
7
What are some of the big open problems in 3-manifold theory?
Jun 16, 2016
question
2
Does one pieces of every kind of connected polyominoes P in $\mathbb{R}^2$ which has no hole cover a plane?
May 1, 2017
answer
1
Journals for undergraduates
Jan 22, 2017
answer
-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, 2016
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13
Nested sudoku in entrance exam
11
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
6
Are there any saltwater rivers on Earth?
5
Where can I get a list of important theorems for Math Olympiads?