Mathematics
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Plop

Apparently, this user prefers to keep an air of mystery about them.

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  • Member for 9 years, 9 months
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  • Last seen Mar 25 '15 at 19:08

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39 How to prove $\cos \frac{2\pi }{5}=\frac{-1+\sqrt{5}}{4}$? Oct 24 '10
25 thoughts about $f(f(x))=e^x$ Sep 19 '11
17 Prove that the limit of $\sin n$ as $n \rightarrow \infty$ does not exist Mar 15 '11
17 What do prime ideals in $k[x,y]$ look like? Aug 11 '11
13 Importance of Cayley's theorem Nov 12 '10
13 Distinct Sylow $p$-subgroups intersect only at the identity, which somehow follows from Lagrange's Theorem. Why? Mar 2 '11
12 Inequality involving factorial $\binom nk<(en/k)^k$ Jun 2 '11
11 Direct summand of a free module Aug 17 '11
11 Nitpicky question about harmonic series May 6 '11
11 Proving that the terms of the sequence $(nx-\lfloor nx \rfloor)$ is dense in $[0,1]$. Jan 30 '11
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