Mathematics
Takahiro Waki
  • Member for 6 years, 3 months
  • Last seen more than 2 years ago
  • Yokosuka, Kanagawa, Japan
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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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A user has downvoted me many times [closed]
Jan 20 '17
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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} $
7
What are some of the big open problems in 3-manifold theory?
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?

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