On the 1-Cohomology of Finite Groups of Lie Type
✍ Scribed by Michael F. Dowd
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 169 KB
- Volume
- 188
- Category
- Article
- ISSN
- 0021-8693
No coin nor oath required. For personal study only.
✦ Synopsis
For each simply connected semisimple algebraic group G defined and split over the prime field ކ , we establish a uniform bound on n above which all of the first p Ž . cohomology groups with values in the simple modules for the finite group G n are Ž .
determined by those for the algebraic group G ކ . ᮊ 1997 Academic Press p * The author is indebted to Peter Sin, who worked out the details of the strategy of the Ž w x. proof for several particular cases of G and p cf. 7᎐9 and who encouraged me to generalize the result. 720
📜 SIMILAR VOLUMES
1. Introduction 2. Preliminaries 3. The main lemma 4. The main theorem Ž . 5. Self-dual representations for GL n, F q 6. Calculation of the element s and consequences 7. Symplectic groups Ž . 8. Self-dual representations for SL n, F q Ž . 9. The counterexample for SL 6, F , q ' 3 mod 4 q 10. Referen
We show how to deduce multiplicity one theorems for cuspidal representations of finite groups of Lie type from analogous results for p-adic groups. We then look at examples where the latter is known. One such example is the restriction of Ž . Ž . w x irreducible representations of SO n to SO n y 1 S
A permutation group G is said to be a group of finite type {k}, k a positive integer, if each nonidentity element of G has exactly k fixed points. We show that a group G can be faithfully represented as an irredundant permutation group of finite type if and only if G has a non-trivial normal partiti