List questions from group-extensions

Published on 27 Apr 2019 - 19:44

551

Views

Abstract proof that $\lvert H^2(G,A)\rvert$ counts group extensions.

Published on 30 Apr 2019 - 22:01

149

Views

Abelianization of $\mathbb{Z}\ltimes_\varphi \mathbb{Z}^n$

Published on 22 May 2019 - 1:51

91

Views

A special case of group extensions, other then the semidrect product.

Published on 09 Jun 2019 - 11:37

43

Views

Is every non-simple finite group constructible from simple groups of lesser order by extensions?

Published on 10 Jun 2019 - 10:39

498

Views

Cocycles and group extensions

Published on 22 Jun 2019 - 15:09

115

Views

Splitting field of degree $p(p+1)$ contains a Galois subextension of degree $p$.

Published on 30 Jul 2019 - 11:44

101

Views

Proving associativity of addition with weird carry operation

Published on 15 Aug 2019 - 21:55

542

Views

Constructing group extensions in GAP.

Published on 16 Sep 2019 - 20:39

237

Views

Free normal subgroup of an HNN-extension

Published on 19 Sep 2019 - 20:51

84

Views

Does every $G$-by-$C_2$ extension split?

Published on 20 Sep 2019 - 2:47

318

Views

Central extensions of elementary abelian p-groups

Published on 16 Mar 2014 - 17:50

468

Views

Extensions of Abelian groups to non-Abelian groups

Published on 29 Mar 2014 - 18:59

75

Views

Is there a sort of "two-sided semidirect product"?

Published on 28 Apr 2014 - 19:53

133

Views

Two natural extensions of every algebra. Extension to subsets or functions.

Published on 17 May 2014 - 11:38

List Question

Are all finite groups extensions of other groups?

Abstract proof that $\lvert H^2(G,A)\rvert$ counts group extensions.

Abelianization of $\mathbb{Z}\ltimes_\varphi \mathbb{Z}^n$

A special case of group extensions, other then the semidrect product.

Is every non-simple finite group constructible from simple groups of lesser order by extensions?

Cocycles and group extensions

Splitting field of degree $p(p+1)$ contains a Galois subextension of degree $p$.

Proving associativity of addition with weird carry operation

Constructing group extensions in GAP.

Free normal subgroup of an HNN-extension

Does every $G$-by-$C_2$ extension split?

Central extensions of elementary abelian p-groups

Extensions of Abelian groups to non-Abelian groups

Is there a sort of "two-sided semidirect product"?

Two natural extensions of every algebra. Extension to subsets or functions.

Trending Questions

Popular # Hahtags

Popular Questions