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106 Answers

newest activity votes
1
Why is $\sum_{g \in G} \rho(g) =0$ for any nontrivial irreducible representation
16h ago
2
The Best of Dover Books (a.k.a the best cheap mathematical texts)
jun 12 at 16:24
2
Does every Poisson bracket on a commutative algebra come from a second-order deformation?
apr 19 at 17:36
2
Clarification Regarding the Tor Functor involved in a Finite Exact Sequence
feb 26 at 17:21
1
Super or subscript notation on the left hand side of a symbol?
feb 26 at 13:09
5
Elementary books by good mathematicians
feb 25 at 16:37
2
(geometric/intuitive) interpretation of ext
jan 4 at 13:26
2
Non-Free Finitely Generated Injective Modules over a Local Ring
dec 10 at 20:09
2
Memoire sur la courbure des surfaces by Sophie Germain
dec 10 at 18:30
1
When (G:S) is finite, why is every injective G-module, when considered as an S-module, still an injective S-module?
dec 6 at 15:23
1
Character table in MAGMA
nov 27 at 17:59
1
GCD using quantifiers - where did I make a mistke?
nov 23 at 10:27
1
Is there a (introductory) differential equations books from the infinitesimal perspective?
nov 19 at 19:36
2
$\text{Hom}(\mathbb{F}_p G, M)$ and $H^1(G,M)$
nov 19 at 12:28
5
Wedge product of Hochschild Cohomology classes in characteristic 2
nov 2 at 20:28
1
Coercion in MAGMA
nov 2 at 9:34
8
An example for a calculation where imaginary numbers are used but don't occur in the question or the solution.
oct 31 at 10:00
5
Small Question on the Tor functor
oct 25 at 13:13
2
Highest weight of dual representation of $\mathfrak{sl}_3$
oct 13 at 12:31
2
Learning to use MAGMA
oct 5 at 13:44
1
How to iterate over power set in MAGMA?
oct 5 at 13:37
1
Stuck in proof of combinatorial identity - Fulton and Harris A.39
oct 1 at 14:48
1
Why are these two functors isomorphic?
sep 24 at 8:47
1
Free Associative Algebras
aug 26 at 18:27
1
direct sum to get a vector space
aug 18 at 14:22
3
Question regarding technicalities in the paper Iterated Prisoner’s Dilemma contains strategies that dominate any evolutionary opponent
aug 18 at 11:21
9
Regular Polyhedrons
aug 6 at 8:36
1
Formal deformations of modules
jul 5 '12 at 18:21
1
Graded Vector Spaces and the Interchange Law
jun 15 '12 at 10:26
1
$\operatorname{Hom}(\mathbb{Z}G,I) \cong I $
jun 14 '12 at 15:20
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