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1 vote
0 answers
64 views

Show me that I have not simplified the proof of the Adian-Rabin theorem

4 votes
1 answer
158 views

Local triviality of torsors for relative reductive groups

12 votes
2 answers
578 views

The mysterious significance of local subgroups in finite group theory

3 votes
0 answers
195 views

What is known about the map $\text{Mod}_g^1 \rightarrow \text{Aut}(F_{2g})$?

2 votes
1 answer
238 views

Which algebraic groups are generated by (lifts of) reflections?

6 votes
1 answer
336 views

Does every transitive permutation group contain a permutation whose cycle lengths have a common divisor?

10 votes
1 answer
201 views

Example of three dimensional atoroidal Poincaré duality group with some pathology

10 votes
1 answer
486 views

Can automorphism equivalence in a free group be detected in a nilpotent quotient?

17 votes
1 answer
1k views

Explicit character tables of non-existent finite simple groups

12 votes
1 answer
475 views

Generators for the first cohomology of free groups

11 votes
2 answers
693 views

Generalisation of abelianisation using representation theory?

7 votes
0 answers
130 views

An identity for characters of the symmetric group

5 votes
1 answer
151 views

What is the effect of tensoring with the sign representation on irreducible modules for a Type D Weyl group?

2 votes
1 answer
209 views

Can a non-free Whitehead group embed as a discrete subgroup of a normed space?

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