Mathematics
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Plop
  • Member for 11 years, 7 months
  • Last seen more than 7 years ago
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78
Score
7
Posts
9
Posts %
73
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9
Posts
11
Posts %
47
Score
5
Posts
6
Posts %
41
Score
8
Posts
10
Posts %
35
Score
5
Posts
6
Posts %
28
Score
4
Posts
5
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Top posts
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All Questions Answers
Score Newest
answer
41
How to prove $\cos \frac{2\pi }{5}=\frac{-1+\sqrt{5}}{4}$?
Oct 24, 2010
answer
27
thoughts about $f(f(x))=e^x$
Sep 19, 2011
answer
18
Prove that the limit of $\sin n$ as $n \rightarrow \infty$ does not exist
Mar 15, 2011
answer
18
What do prime ideals in $k[x,y]$ look like?
Aug 11, 2011
answer
13
Importance of Cayley's theorem
Nov 12, 2010
answer
13
Distinct Sylow $p$-subgroups intersect only at the identity, which somehow follows from Lagrange's Theorem. Why?
Mar 2, 2011
answer
12
Hom of finitely generated modules over a noetherian ring
Nov 5, 2010
answer
12
Inequality involving factorial $\binom nk<(en/k)^k$
Jun 2, 2011
answer
11
Direct summand of a free module
Aug 17, 2011
answer
11
Nitpicky question about harmonic series
May 6, 2011
Top network posts
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30
Subspace of $L^2$ that lies in $L^\infty$
9
Question about computing group cohomology using cochains
6
How can we extend Galois representations ?
6
Do there exist nonconstant functions such that...
5
Making the fixed field algebraically closed

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