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Results tagged with gr.group-theory
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user 4194
Questions about the branch of algebra that deals with groups.
0
votes
Another group cohomology cup product question
I'm not sure what kind of answer you're hoping for: how will you describe an element of $H^4$, for example, without using cocycles?
Having said that, perhaps syzygies would help. Let $I$ denote the …
- 4,254
6
votes
Subalgebra of a group algebra
If $A$ is the group algebra of a subgroup, then $k[G]$ will be free as a module over $A$, and that may help to rule out some cases. This is not at all an "if and only if" statement, though.
Propositi …
- 4,254