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YiFan

Saying hi from Singapore :)

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Top Posts (159) All Questions Answers | Votes Newest

10 Solid Angle Trigonometry? Jan 29 '18
9 Is there a substitution which transforms every Fermat curve into an elliptic curve? Dec 17 '18
7 Is there a natural group of subgroups of a group? Jan 5
7 Synthetic solution to this geometry problem? Dec 5 '18
7 A pattern in determinants of Fibonacci numbers? Dec 3 '18
6 A pattern in determinants of Fibonacci numbers? Dec 3 '18
6 When is $p^2+1$ twice of a prime? Dec 29 '18
6 How to solve $\sin^2(x)+\sin2x+2\cos^2(x)=0$ Aug 19 '18
6 Is $x+y -\pi$ an algebraic expression or not? Dec 27 '18
5 Intersection of $\{2^a 3^b 5^c7^d\}$with its translates Dec 10 '18
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