6533b7dcfe1ef96bd127210f

RESEARCH PRODUCT

Character sums and double cosets

Gabriel NavarroI. M. Isaacs

subject

Discrete mathematicsFinite groupAlgebra and Number TheoryDegree (graph theory)Character theorySylow theoremsCommutator subgroupFinite groupsCombinatoricsCharacter (mathematics)IntegerDouble cosetsCosetCharacter theoryMcKay conjectureMathematics

description

Abstract If G is a p-solvable finite group, P is a self-normalizing Sylow p-subgroup of G with derived subgroup P ′ , and Ψ is the sum of all the irreducible characters of G of degree not divisible by p, then we prove that the integer Ψ ( P ′ z P ′ ) is divisible by | P | for all z ∈ G . This answers a question of J. Alperin.

https://doi.org/10.1016/j.jalgebra.2008.08.010