List questions from group-rings

Published on 09 Jun 2019 - 16:57

60

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Hom$_{i[k]}(k[G], R) \approx$ Hom$(G,R^*)$

Published on 10 Jun 2019 - 20:20

112

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Find an example of a group algebra with non-trivial solutions to $x^2=x$.

Published on 16 Jun 2019 - 3:40

132

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A question about group ring of a group over matrix ring!

Published on 19 Jun 2019 - 15:54

282

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How do I construct the group algebra of a group in GAP?

Published on 25 Jun 2019 - 10:39

92

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Confused about the $K$-algebra homomorphism from a representation

Published on 30 Jul 2019 - 2:20

361

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Group Rings of Topological Groups and Fields

Published on 25 Mar 2026 - 1:23

47

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What is the differential $d^0(f) : C^0(G, A) \to C^1(G, A)$ knowing the general formula?

Published on 10 Aug 2019 - 2:50

43

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The maps in the $\mathbb Z [\mathbb Z]-$free resolution of $\mathbb Z$

Published on 19 Aug 2019 - 16:47

484

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Tensor product of group algebras

Published on 25 Aug 2019 - 5:05

333

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Representation of group ring $R[G]$

Published on 02 Sep 2019 - 10:39

36

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Cycle detection using group ring membership.

Published on 24 Sep 2019 - 12:44

183

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Group ring of $\mathbb Z\times \mathbb Z$.

Published on 25 Sep 2019 - 11:16

134

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Free resolution of $\mathbb Z\times \mathbb Z$.

Published on 25 Sep 2019 - 12:43

534

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Are there homomorphisms of group algebras that don't come from a group homomorphism?

Published on 23 Mar 2014 - 16:12

List Question

GAP: how to work with elements of the group ring of the symmetric group $\mathbb{C}[S_k]$?

Hom$_{i[k]}(k[G], R) \approx$ Hom$(G,R^*)$

Find an example of a group algebra with non-trivial solutions to $x^2=x$.

A question about group ring of a group over matrix ring!

How do I construct the group algebra of a group in GAP?

Confused about the $K$-algebra homomorphism from a representation

Group Rings of Topological Groups and Fields

What is the differential $d^0(f) : C^0(G, A) \to C^1(G, A)$ knowing the general formula?

The maps in the $\mathbb Z [\mathbb Z]-$free resolution of $\mathbb Z$

Tensor product of group algebras

Representation of group ring $R[G]$

Cycle detection using group ring membership.

Group ring of $\mathbb Z\times \mathbb Z$.

Free resolution of $\mathbb Z\times \mathbb Z$.

Are there homomorphisms of group algebras that don't come from a group homomorphism?

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