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7 votes
2 answers
126 views

What is the quotient group $D^*/{F^*(1+P_D)}$ for a quaternion division algebra $D$ over a local field $F$?

-1 votes
0 answers
32 views

$S$-semipermutable subgroup

5 votes
0 answers
92 views

What are the indecomposable modules over $\mathbb{F}_2(C_2\times C_2)$?

1 vote
1 answer
110 views

Finiteness of $\ell^2$-Betti numbers

0 votes
0 answers
255 views
+50

Minimal non-solvable groups with a special property

-1 votes
0 answers
110 views

Known non-solvable inseparable subgroups of the Monster

2 votes
1 answer
69 views

How far is a countably infinite reduced abelian $p$-group from being an infinite direct sum?

4 votes
0 answers
94 views

Distortion in the Brin-Thompson 2V

5 votes
0 answers
102 views

Uncountable locally finite group contains a countably infinite normal subgroup

3 votes
0 answers
259 views

What about a Cayley n-complex for n>2?

2 votes
1 answer
77 views

Extensions containing the Schur cover II

1 vote
1 answer
52 views

Element of order $p$ and finite height $\geq1$ in a reduced abelian group $p$-group with an element of order $p^2$

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