## OHMORI Joujuu,

## Rationality of certain cuspidal unipotent representations in crystalline cohomology groups.

## Hokkaido Mathematical Journal, 35 (2006) pp.547-563

### Fulltext

PDF### Abstract

We complete the determination of the local Schur indices of each unipotent representation of the group $G(\mathbb F_q)$ of $\mathbb F_q$-rational points of a simple algebraic group $G$ defined over a finite field $\mathbb F_q$.

MSC(Primary) | 20G40 |
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MSC(Secondary) | 20G05, 14F20, 14F30, 20C33, 20C11, 12E20, 12E15, 12E30, 14F42, 20C05, 16G10 |

Uncontrolled Keywords | unipotent representations, Schur indices, crystalline cohomology groups |