List questions from group-extensions

Published on 18 Mar 2016 - 21:15

89

Views

Find $[\mathbb Q (\sqrt[4]{-5}, \xi^2 ) : \mathbb Q ]$

Published on 18 Mar 2016 - 22:27

63

Views

Find $[ \, \mathbb Q ( \sqrt[3]3 , \eta ) : \mathbb Q \, ] $

Published on 19 Mar 2016 - 22:46

150

Views

Extensions of P-divisible Groups

Published on 23 Mar 2026 - 10:08

248

Views

Calculating cyclic extensions of a group

Published on 07 Apr 2016 - 19:00

68

Views

Explicit computation of $H^2(\mathbb{F}_p^n, \mathbb{R}/\mathbb{Z})$.

Published on 16 May 2016 - 15:12

157

Views

Calculating $\mathrm{Ext}_R^i(\mathbb{Z},\mathbb{Z})$ for $R=\mathbb{Z}[x,y]/(xy)$

Published on 22 May 2016 - 16:39

181

Views

Describe all extension groups of a given subgroup $H \trianglelefteq$ Aff$\mathbb{(F_q)}$ by Aff$\mathbb{(F_q)}/H$

Published on 29 May 2016 - 15:03

100

Views

Group extension that doesn't realize a coupling

Published on 23 Feb 2026 - 6:35

473

Views

Classify all groups containing isomorphic copy of $\mathbb{Z}$ of index $2$.

Published on 24 Mar 2026 - 23:34

285

Views

Is $G$ a semidirect product of $Z(G)$ and $\operatorname{Inn}(G)$?

Published on 23 Jul 2013 - 18:24

341

Views

non-split extension of the simple group $L_3(4)$

Published on 16 Mar 2026 - 18:06

113

Views

Central quotient of $G=K\rtimes H$ where $H$ is core-free and $Z(G)\leqslant K$

Published on 16 Aug 2013 - 14:37

376

Views

Group Extension and Classifying Space

Published on 26 Mar 2026 - 2:52

162

Views

A simple question on Ext groups

Published on 01 Sep 2013 - 21:18

List Question

Find $[\mathbb Q (\xi ^2 ) : \mathbb Q ]$

Find $[\mathbb Q (\sqrt[4]{-5}, \xi^2 ) : \mathbb Q ]$

Find $[ \, \mathbb Q ( \sqrt[3]3 , \eta ) : \mathbb Q \, ] $

Extensions of P-divisible Groups

Calculating cyclic extensions of a group

Explicit computation of $H^2(\mathbb{F}_p^n, \mathbb{R}/\mathbb{Z})$.

Calculating $\mathrm{Ext}_R^i(\mathbb{Z},\mathbb{Z})$ for $R=\mathbb{Z}[x,y]/(xy)$

Describe all extension groups of a given subgroup $H \trianglelefteq$ Aff$\mathbb{(F_q)}$ by Aff$\mathbb{(F_q)}/H$

Group extension that doesn't realize a coupling

Classify all groups containing isomorphic copy of $\mathbb{Z}$ of index $2$.

Is $G$ a semidirect product of $Z(G)$ and $\operatorname{Inn}(G)$?

non-split extension of the simple group $L_3(4)$

Central quotient of $G=K\rtimes H$ where $H$ is core-free and $Z(G)\leqslant K$

Group Extension and Classifying Space

A simple question on Ext groups

Trending Questions

Popular # Hahtags

Popular Questions