Article ID Journal Published Year Pages File Type
4589411 Journal of Algebra 2006 22 Pages PDF
Abstract

Let G be a finite solvable group, p be some prime, let P be a Sylow p-subgroup of G, and let N be its normalizer in G. It is known that the number of irreducible characters of G of degree prime to p equals the number of irreducible characters of N of degree prime to p. Let F be any field of characteristic zero such that, if [G:N] is even, then F contains Qp∩Q(ζ2∞), the intersection of the field of p-adic numbers with the field of rational numbers extended by all roots of unity whose order is a power to two. In this paper, we show that there exists a bijection from the set of all irreducible characters of G of degree prime to p to the set of all the irreducible characters of degree prime to p of N such that it preserves ± the degrees modulo p, all the field of values over F, and the Schur index over every field containing F.

Related Topics
Physical Sciences and Engineering Mathematics Algebra and Number Theory