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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, 10 months
  • Last seen more than 4 years ago
  • Yokosuka, Kanagawa, Japan
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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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11
On Ramanujan's curious equality for $\sqrt{2\,(1-3^{-2})(1-7^{-2})(1-11^{-2})\cdots} $
Nov 19, 2016
6
Number of pairs of rational numbers that satisfy the given relation
Apr 11, 2016
5
Where can I get a list of important theorems for Math Olympiads?
Jan 11, 2017
4
Quick! Prove that $3^{15}+37$ is a square.
Dec 3, 2018
4
Find all pairs of intergers satisfying $x^2+11 = y^4 -xy$ and $y^2 + xy= 30 $
Aug 14, 2018
4
Baffled with $\lim\limits_{x\to 0}{e^x-e^{\sin x} \over x-\sin x}$
Apr 18, 2018
4
Squares and Rationalization
Jul 9, 2017
4
Example of a hexagon inscribed in a circle
Mar 19, 2018
3
Proof that 4 points lie on a circle and that center of this circle lies on the circumcircle of $\triangle ABC$
Dec 3, 2018
3
largest positive root
Jun 30, 2017
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13
Nested sudoku in entrance exam
7
What are some of the big open problems in 3-manifold theory?
6
Are there any saltwater rivers on Earth?