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The nuclear length of a character

Published online by Cambridge University Press:  09 April 2009

Wayne W. Wheeler
Affiliation:
School of Mathematical Sciences, Australian National University, Canberra ACT 0200, Australia, (e-mail: [email protected])
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Abstract

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If G is a π-separable group and χ is an irreducible character of G, then Issacs gas defined an associated pair (W, γ), called a nucleus of χ. The nucleus is the last term in a certain chain of pairs (I, Ω), where I is a subgroup of G and Ω is an irreducible character of I. The length of this chain is an invariant of χ that we call the nuclear length. In this paper we study bounds on the nuclear length of χ as a function of the π-length of G and as a function of the character degree χ(1).

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 1994

References

[1]Gajendragadkar, D., ‘A characteristic class of characters of finite π-separable groups’, J. Algebra 59 (1979), 237259.Google Scholar
[2]Isaacs, I. M., ‘Characters of π-separable groups’, J. Algebra 86 (1984), 98128.CrossRefGoogle Scholar
[3]Isaacs, I. M. and Navarro, G., ‘Weights and vertices for characters of π-separable groups’, preprint.Google Scholar
[4]Slattery, M., ‘Pi-blocks of pi-separable groups, I’, J. Algebra 102 (1986), 6077.Google Scholar
[5]Slattery, M., ‘Pi-blocks of pi-separable groups, II’, J. Algebra 124 (1989), 236269.CrossRefGoogle Scholar
[6]Slattery, M., ‘Pi-blocks of pi-separable groups, III’, J. Algebra 158 (1993), 268278.CrossRefGoogle Scholar