Timeline for Which R-algebras are the group ring of some group over a ring R?
Current License: CC BY-SA 2.5
5 events
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| Feb 3, 2010 at 17:05 | comment | added | Autumn Kent | Regarding whether or not there are easier infinite counterexamples to the isomorphism problem: I think that Hertweck's example was the first counterexample, period, and that it's even more surprising that the examples are finite. I don't know what's happened in the interim. There's a brief history up to Hertweck here: ime.usp.br/~polcino/group_rings | |
| Feb 1, 2010 at 23:06 | history | edited | David Treumann | CC BY-SA 2.5 |
pete
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| Jan 31, 2010 at 20:31 | comment | added | Zev Chonoles | Thanks for the in depth answer, and interesting reference - for some reason, group algebras/rings are really capturing my interest lately. | |
| Jan 31, 2010 at 19:09 | history | edited | David Treumann | CC BY-SA 2.5 |
added 576 characters in body; deleted 6 characters in body
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| Jan 31, 2010 at 18:07 | history | answered | David Treumann | CC BY-SA 2.5 |