English

Parameterization of irreducible characters for p-solvable groups

Group Theory 2010-06-29 v1

Abstract

The weights for a finite group G with respect to a prime number p where introduced by Jon Alperin, in order to formulate his celebrated conjecture. In 1992, Everett Dade formulates a refinement of Alperin's conjecture involving ordinary irreducible characters - with their defect - and, in 2000, Geoffrey Robinson proves that the new conjecture holds for p-solvable groups. But this refinement is formulated in terms of a vanishing alternating sum, without giving any possible refinement for the weights. In this note we show that, in the case of the p-solvable finite groups, the method developed in a previous paper [arXiv.org/abs/1005.3748] can be suitably refined to provide, up to the choice of a polarization, a natural bijection - namely compatible with the action of the group of outer automorphisms of G - between the sets of absolutely irreducible characters of G and of G-conjugacy classes of suitable inductive weights, preserving blocks and defects.

Keywords

Cite

@article{arxiv.1006.5229,
  title  = {Parameterization of irreducible characters for p-solvable groups},
  author = {Lluis Puig},
  journal= {arXiv preprint arXiv:1006.5229},
  year   = {2010}
}
R2 v1 2026-06-21T15:41:36.469Z