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 Yearling
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Apr
5
comment Dominated convergence theorem and fundamental lemma
this looks like a meaningful question...
Mar
27
awarded  Commentator
Mar
27
awarded  Yearling
Mar
26
comment Proving that $(e^x+1)^{1/3}$ has no elementary antiderivative
well, consider my answer being done by computer, not me :-)
Mar
26
answered Proving that $(e^x+1)^{1/3}$ has no elementary antiderivative
Mar
22
comment Determinant of a Vandermonde matrix of roots of monic polynomial with integer coefficients
the square of the Vandermonde is a symmetric function, and thus Per's argument applies.
Mar
18
comment Nauty software package and weighted graphs
There is no such command in dreadnaut. You will have to supply it the already prepared non-weighted graph.
Mar
18
comment Nauty software package and weighted graphs
Well, how you represent weights is an entirely different question. In the setting of computing automorphisms and isomorphisms all what matters is that different weights are represented by different integer numbers (or colours).
Mar
18
answered Nauty software package and weighted graphs
Feb
12
revised Ten dimensional representation of $S_6$
expanded...
Feb
11
answered Ten dimensional representation of $S_6$
Jan
21
comment How unitarize an irreducible representation of a finite group?
In fact you don't need to compute eigenvalues and eigenvectors. Although you will still need to compute square roots of real cyclotomics at the end, as I mentioned in GAP forum.
Dec
26
comment symmetrizability of generalised cartan matrix
either wikipedia is wrong, or this is by definition: en.wikipedia.org/wiki/Cartan_matrix en.wikipedia.org/wiki/Symmetric_matrix#Symmetrizable_matrix
Dec
19
awarded  Caucus
Sep
29
comment What is the second least non prime order of a simple group?
PSL(3,2), not PSL(7,2)
Sep
29
answered What is the second least non prime order of a simple group?
Sep
28
comment divisibility of number of solutions of $x_1+\cdots+x_k=n$
I'm not 100% sure, but it seems that if $\gcd(n,k)=1$ then all the $k$ cyclic $k$-shifts of a solution are different. This means that the number of solutions is divisible by $k$.
Sep
28
answered divisibility of number of solutions of $x_1+\cdots+x_k=n$
Sep
28
answered For all real $\theta$ prove that $ \cos(\sin\theta) \gt \sin(\cos\theta)$
Aug
8
answered Reference Request: Characters of Finite General Linear Groups