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165
Answers
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activity
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27
divisors of $p^4+1$ of the form $kp+1$
Jun 7 at 11:23
23
Are all free groups linear, i.e., admit a faithful representation to GL(n,K) for some field K ?
Mar 19 '13 at 16:07
22
Finitely generated group with $\aleph_0<X_G<2^{\aleph_0}$ normal subgroups?
Mar 18 '14 at 17:54
20
Does GL_n(Z) have a noetherian group ring?
May 3 '14 at 12:15
19
Must the powers of some element always grow linearly with respect to a word metric?
Apr 12 at 19:54
18
Infinitely many finitely generated groups having the same Cayley graph
Mar 12 '14 at 18:06
16
Existence of infinite groups that are too reluctant to be topological
May 10 '14 at 20:54
14
Can you decide whether the commutator subgroup of a f.p. group is f.g?
Mar 23 at 23:41
14
Minimal number of generators for $GL(n,\mathbb{Z})$
Sep 20 '14 at 18:22
14
Infinitely many finitely generated groups having the same Cayley graph
Mar 12 '14 at 20:33
14
How to construct a group with specified growth function
Dec 8 '13 at 22:00
13
Number of squares in a finite group
Oct 17 at 20:20
12
What is the normal closure of $GL_2(\mathbb{Z})$ inside $GL_2(\mathbb{Z}_\ell)$?
Jul 22 at 16:28
12
Do discrete groups with property $(T)$ have “modest” subgroup growth?
Jun 6 at 18:44
12
A question about conjugacy in Higman's group
Aug 7 '13 at 12:49
12
What finitely presented groups embed into GL_2?
Jul 24 '12 at 6:28
12
Subgroups of $GL(k,q)$ for bounded $k$
Mar 20 '12 at 16:00
11
Is every abelian group a colimit of copies of Z?
May 5 at 20:18
11
Orbits of the projective special linear group on $\mathbf{Q} \cup \{\infty\}$
Jul 31 '12 at 13:25
11
Commutator length modulo finite index subgroups
Jan 14 '13 at 21:53
11
Is there a non-Hopfian lacunary hyperbolic group?
Sep 18 '11 at 20:52
10
Unbounded representations of groups
Mar 30 '13 at 10:42
10
Does the Zariski closure of a maximal subgroup remain maximal?
Aug 9 '11 at 15:29
10
An example of a rank one projective R-Module that is not invertible
Jul 3 '11 at 20:43
10
universal cover of SL2(R): does it admit central extensions?
May 1 '11 at 20:38
9
Normal subgroups of an extension of the Higman group
Oct 23 at 23:10
9
Avoiding countable subgroups of general uncountable groups
Jun 12 at 10:15
9
Obstructions for a group to be the multiplicative group of a field
Apr 28 at 11:32
9
Coherent subgroups of $F_2 \times F_2$
Apr 9 at 8:07
9
If $R$ is generated by idempotents, then $\text{Ann}(R)=0$?
Mar 31 at 8:41
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