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David A. Craven
  • Member for 2 years, 2 months
  • Last seen this week
  • Birmingham University, Birmingham, UK
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About

Algebraist involved in finite group representation theory, subgroup structure of simple groups, fusion systems, and things like that

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29
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8
Posts
80
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14
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3
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30
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40
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Top posts
All Questions Answers
Score Newest
answer
7
Finite simple groups and $ \operatorname{SU}_n $
Jan 31
answer
6
What is the current status of the Kaplansky zero-divisor conjecture for group rings?
May 2, 2020
question
6
Maximal dimension of abelian subalgebra of exceptional simple Lie algebra in positive characteristic
Feb 21, 2020
answer
5
Lunch seminars for PhD students
Oct 18, 2021
answer
4
Can the defining rep of $E_7$ split over a finite subgroup while the adjoint remains simple?
Mar 13, 2020
answer
3
Is $1\neq a\in Z(2.E_7(q))\cong Z_2$ a square element in $2.E_7(q)$?
May 10, 2020
answer
3
Can MAGMA compute almost projective $kG$-homomorphisms?
May 10, 2020
answer
3
Extensions containing the Schur cover
May 5
answer
2
"Conjugacy classes–irreducibles" bijection, but for permutation representations
Jun 30, 2020
answer
1
How to check whether a given matrix is in the image of a representation?
Feb 21, 2020
Top network posts
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61
Is it unethical not to disclose a reduction in travel cost due to delays when getting reimbursed for business trip?
20
How powerful is Cayley's theorem?
12
What is the intuition behind the definition of the action of a group on a set? Why do we call a homomorphism $G\to\mathcal S(X)$ a "representation"?
10
Show that if $|G|=30$ then $G$ has normal $3$-Sylow and $5$-Sylow
10
Characterization of nonabelian group $G$ such that for all $x,y\in G$, $xy\neq yx\implies x^2=y^2$.

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