Regular Sylow $d$-Tori of classical groups and the McKay conjecture

Details Regular Sylow $d$-Tori of classical groups and the McKay conjecture Regular Sylow $d$-Tori of classical groups and the McKay conjecture

2009-03-25

arxiv.org/abs/0903.4336v1

Mathematics

Representation Theory

Scientific paper

We prove for finite reductive groups $G$ of classical type, that every irreducible character of $L$ extends to its inertia group in $N$, where $L$ is an abelian centraliser of a Sylow $d$-torus $\mathbf S$ of $G$ and $N:=N_G(\mathbf S)$. This gives a precise description of the irreducible characters of $N$. Furthermore it enables us to verify the McKay conjecture in this situation for $G$ and some primes.

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