Timeline for Group cohomology and cohomology in non-abelian categories
Current License: CC BY-SA 2.5
5 events
| when toggle format | what | by | license | comment | |
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| Oct 31, 2010 at 23:47 | comment | added | Evan Jenkins | If by "regular cohomology" you mean "Ext," then I believe the answer is yes: the category of Beck modules over X is the original category, and the cohomology theories become Ext(X, -). At least this is the case in the category of abelian groups according to section 3.2 of Frankland's thesis, and I believe the same argument holds in any abelian category. | |
| Oct 30, 2010 at 19:08 | comment | added | Makhalan Duff | Thanks a lot! It's very nice to know. Here's a silly question: does this specialize to the regular cohomology if we're working with an a priori abelian category? | |
| Oct 30, 2010 at 18:31 | vote | accept | Makhalan Duff | ||
| Oct 30, 2010 at 18:26 | vote | accept | Makhalan Duff | ||
| Oct 30, 2010 at 18:26 | |||||
| Oct 30, 2010 at 16:26 | history | answered | Evan Jenkins | CC BY-SA 2.5 |