Timeline for Composition factors of tensor products of modular representations
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 5, 2013 at 20:51 | vote | accept | KoopaTroopa | ||
| Oct 5, 2013 at 20:50 | vote | accept | KoopaTroopa | ||
| Oct 5, 2013 at 20:51 | |||||
| Oct 5, 2013 at 20:43 | comment | added | Geoff Robinson | I think the proof by Bryant and Kovacs is of a rather stronger results (essentially a free summand of a high enough tensor power). There is an earlier ( I think) proof by Kovacs along the character theoretic lines I outlined- this may have appeared in an article by Peter Neumann titled " A letter from L Kovacs" or something like that. This follows the Brauer Blichfeldt pattern, except using Brauer character, if my memory is accurate. Maybe not the first proo though. Maybe I've mixed it up with a variant of Brauer's permutation lemma on Brauer character tables. | |
| Oct 5, 2013 at 19:53 | vote | accept | KoopaTroopa | ||
| Oct 5, 2013 at 19:53 | |||||
| Oct 5, 2013 at 19:52 | comment | added | Jim Humphreys | While the basic facts were established much earlier, there is a short direct proof by Bryant-Kovacs, Tensor products of representations of finite groups. Bull. London Math. Soc. 4 (1972), 133–135 | |
| Oct 5, 2013 at 18:34 | history | answered | Geoff Robinson | CC BY-SA 3.0 |