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Takahiro Waki's user avatar
Takahiro Waki's user avatar
Takahiro Waki's user avatar
Takahiro Waki
  • Member for 7 years, 8 months
  • Last seen more than 4 years ago
  • 日本神奈川県Yokosuka-shi
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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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11
On Ramanujan's curious equality for $\sqrt{2\,(1-3^{-2})(1-7^{-2})(1-11^{-2})\cdots} $
11
Nested sudoku in entrance exam
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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