<p>Very recently, the first and third authors proposed a new conjecture on characters of finite groups, related to the McKay conjecture. Let <i>p</i> be a prime number and <i>G</i> a finite group. We say that a <i>p</i>-element <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(x \in G\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>x</mi> <mo>∈</mo> <mi>G</mi> </mrow> </math></EquationSource> </InlineEquation> is <i>picky</i> in <i>G</i> if it is contained in a unique Sylow <i>p</i>-subgroup of <i>G</i>. The simplest formulation of this conjecture predicts the existence of a bijection between the set of irreducible characters of <i>G</i> that do not vanish on a picky <i>p</i>-element <i>x</i>, and the corresponding set of irreducible characters of the normalizer of the unique Sylow <i>p</i>-subgroup of <i>G</i> containing <i>x</i>. Moreover, this bijection is expected to satisfy several natural conditions. For example, the <i>p</i>-parts of the degrees of corresponding characters should coincide, and their values at <i>x</i> should also be suitably related. In this paper, we prove this conjecture for <i>p</i>-solvable groups when <i>p</i> is odd.</p>

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Character values of p-solvable groups on picky elements

  • Alexander Moretó,
  • Gabriel Navarro,
  • Noelia Rizo

摘要

Very recently, the first and third authors proposed a new conjecture on characters of finite groups, related to the McKay conjecture. Let p be a prime number and G a finite group. We say that a p-element \(x \in G\) x G is picky in G if it is contained in a unique Sylow p-subgroup of G. The simplest formulation of this conjecture predicts the existence of a bijection between the set of irreducible characters of G that do not vanish on a picky p-element x, and the corresponding set of irreducible characters of the normalizer of the unique Sylow p-subgroup of G containing x. Moreover, this bijection is expected to satisfy several natural conditions. For example, the p-parts of the degrees of corresponding characters should coincide, and their values at x should also be suitably related. In this paper, we prove this conjecture for p-solvable groups when p is odd.