Question

Representing curves using elements of a free group

score 67 · Answer 1 · 2018-08-18 22:33:32

67

Views

Representing curves using elements of a free group

Published on 18 Aug 2018 - 22:33

score 440 · Answer 2 · 2026-03-17 10:14:54

440

Views

Amount of elements of order $p^2$

Published on 17 Mar 2026 - 10:14

score 180 · Answer 3 · 2026-03-25 03:41:48

180

Views

How many epimorphisms from $F_2$ to $\mathbb{Z}_5$?

Published on 25 Mar 2026 - 3:41

score 235 · Answer 4 · 2026-03-25 05:50:19

235

Views

Elementary divisors of a subgroup of $\mathbb{Z^2}$ of index $36$

Published on 25 Mar 2026 - 5:50

score 111 · Answer 5 · 2026-03-25 09:06:04

111

Views

What could be the elementary divisors of subgroup of $\mathbb{Z}^2$

Published on 25 Mar 2026 - 9:06

score 172 · Answer 6 · 2026-03-25 04:39:11

172

Views

$G=\langle a,b \mid baba^{-1}=1\rangle$ Show that $\langle a \rangle$ is infinite

Published on 25 Mar 2026 - 4:39

score 125 · Answer 7 · 2026-03-25 07:39:53

125

Views

Computing $\mathbb{Z} \ast_{\mathbb{Z}} \mathbb{Z}$

Published on 25 Mar 2026 - 7:39

score 138 · Answer 8 · 2018-10-03 02:46:19

138

Views

Centraliser of a subgroup of Free Group

Published on 03 Oct 2018 - 2:46

score 35 · Answer 9 · 2018-10-10 16:39:31

35

Views

$F=\langle a_1 ,..., a_n \rangle$ is a free group, show: $w\in [F,F] \Leftrightarrow \sigma_i(w)=0 \forall 1\le i \le n$

Published on 10 Oct 2018 - 16:39

score 54 · Answer 10 · 2018-10-15 20:15:23

54

Views

Difference between $F(S)$ and $G$ when $S$ generates $G$

Published on 15 Oct 2018 - 20:15

score 202 · Answer 11 · 2018-10-21 07:14:30

202

Views

Generators and relation in group and non-triviality

Published on 21 Oct 2018 - 7:14

score 68 · Answer 12 · 2018-10-25 11:54:15

68

Views

How can I represent by generators and relations the set of real numbers

Published on 25 Oct 2018 - 11:54

score 230 · Answer 13 · 2018-11-08 12:41:33

230

Views

Can $G/2G$ and $\mathbb Z / 2\mathbb Z \times ... \times \mathbb Z / 2\mathbb Z$ be not isomorphic? $G$ is a free abelian group with finite basis.

Published on 08 Nov 2018 - 12:41

score 120 · Answer 14 · 2026-02-23 01:22:59

120

Views

The (un)decidability of the Tits Alternative for any given (suitably defined) set of groups.

Published on 23 Feb 2026 - 1:22

score 61 · Answer 15 · 2026-03-20 07:33:38

61

Views

Basic assertion about central extensions

Published on 20 Mar 2026 - 7:33

List Question

Representing curves using elements of a free group

Amount of elements of order $p^2$

How many epimorphisms from $F_2$ to $\mathbb{Z}_5$?

Elementary divisors of a subgroup of $\mathbb{Z^2}$ of index $36$

What could be the elementary divisors of subgroup of $\mathbb{Z}^2$

$G=\langle a,b \mid baba^{-1}=1\rangle$ Show that $\langle a \rangle$ is infinite

Computing $\mathbb{Z} \ast_{\mathbb{Z}} \mathbb{Z}$

Centraliser of a subgroup of Free Group

$F=\langle a_1 ,..., a_n \rangle$ is a free group, show: $w\in [F,F] \Leftrightarrow \sigma_i(w)=0 \forall 1\le i \le n$

Difference between $F(S)$ and $G$ when $S$ generates $G$

Generators and relation in group and non-triviality

How can I represent by generators and relations the set of real numbers

Can $G/2G$ and $\mathbb Z / 2\mathbb Z \times ... \times \mathbb Z / 2\mathbb Z$ be not isomorphic? $G$ is a free abelian group with finite basis.

The (un)decidability of the Tits Alternative for any given (suitably defined) set of groups.

Basic assertion about central extensions

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