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Related papers: The McKay--Navarro conjecture for the prime 2

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For a prime $\ell$, the McKay conjecture suggests a bijection between the set of irreducible characters of a finite group with $\ell'$-degree and the corresponding set for the normalizer of a Sylow $\ell$- subgroup. Navarro's refinement…

Group Theory · Mathematics 2022-11-28 L. Ruhstorfer , A. A. Schaeffer Fry

We prove that for most groups of Lie type, the bijections used by Malle and Spaeth in the proof of Isaacs-Malle-Navarro's inductive McKay conditions for the prime 2 and odd primes dividing q - 1 are also equivariant with respect to certain…

Representation Theory · Mathematics 2020-07-31 A. A. Schaeffer Fry

We prove the original Galois refinement of the McKay conjecture, proposed by Isaacs--Navarro in 2002, providing an important subcase of the celebrated McKay--Navarro conjecture with several local-global consequences.

Representation Theory · Mathematics 2025-09-03 L. Ruhstorfer , A. A. Schaeffer Fry

We gather tools for proving the inductive McKay--Navarro (or Galois--McKay) condition for groups of Lie type and odd primes. We use this to establish a bijection in the case of quasisimple groups of Lie type A satisfying the equivariance…

Representation Theory · Mathematics 2025-06-23 Lucas Ruhstorfer , A. A. Schaeffer Fry , Britta Späth , Jay Taylor

In this paper we consider the inductive Alperin-McKay condition for quasi-isolated 2-blocks of exceptional groups of Lie type. Thereby, we complete the proof of the Alperin-McKay conjecture for the prime 2.

Representation Theory · Mathematics 2022-04-14 Lucas Ruhstorfer

The McKay--Navarro conjecture is a refinement of the McKay conjecture that additionally takes the action of some Galois automorphisms into account. We verify the inductive McKay--Navarro condition in the defining characteristic for the…

Representation Theory · Mathematics 2022-09-21 Birte Johansson

Recently Navarro proposed a strengthening of the unsolved McKay conjecture using Galois automorphisms. We prove that the Navarro conjecture holds for the alternating groups when the prime p is odd.

Representation Theory · Mathematics 2021-06-02 Olivier Brunat , Rishi Nath

We verify the inductive McKay--Navarro condition for the groups $\mathsf{B}_2(2^f)$ and $\mathsf{G}_2(3^f)$ and all primes if $f$ is odd. Further, we show that the equivariance part of the inductive condition holds for all integers $f$.

Representation Theory · Mathematics 2023-04-10 Birte Johansson

We reformulate the inductive McKay condition, from Isaacs-Malle-Navarro, and apply the new criterion to simple groups of Lie type, when the prime is the defining characteristic p. Thereby we make use of a recent result of Maslowski. This…

Representation Theory · Mathematics 2014-02-26 Britta Späth

In this paper, we prove one direction of a conjecture of Navarro-Rizo-Schaeffer Fry-Vallejo positing an algorithm to determine from the character table whether a finite group has $2$-generated Sylow $3$-subgroups. This gives further…

Group Theory · Mathematics 2026-02-17 Eden Ketchum , J. Miquel Martínez , Noelia Rizo , A. A. Schaeffer Fry

The so-called inductive McKay condition on finite simple groups, due to Isaacs-Malle-Navarro (2007), has been recently reformulated by Sp\"ath. We show that this reformulation applies to the reduction theorem for Alperin's weight…

Representation Theory · Mathematics 2014-02-26 Marc Cabanes

In this paper, we prove that a refinement of the Alperin-McKay Conjecture for $p$-blocks of finite groups, formulated by I. M. Isaacs and G. Navarro in 2002, holds for all covering groups of the symmetric and alternating groups, whenever…

Representation Theory · Mathematics 2013-01-09 Jean-Baptiste Gramain

In this paper we verify Navarro's refinement of the McKay conjecture for quasi-simple groups of Lie type in their defining characteristic. Navarro's refinement takes into account the action of specific Galois automorphisms on the characters…

Representation Theory · Mathematics 2020-11-02 Lucas Ruhstorfer

We verify the inductive McKay--Navarro condition for the Suzuki and Ree groups for all primes as well as for $p=3$ and the groups $PSL_3(q)$ with $q \equiv 4,7$ mod $9$, $PSU_3(q) $ with $q \equiv 2,5$ mod $9$, and $G_2(q)$ with $q=2,4,5,7$…

Representation Theory · Mathematics 2022-02-03 Birte Johansson

We verify the inductive McKay condition for simple groups of Lie type C, namely finite projective symplectic groups. This contributes to the program of a complete proof of the McKay conjecture for all finite groups via the reduction theorem…

Representation Theory · Mathematics 2016-12-13 Marc Cabanes , Britta Späth

We generalize the theory of ordering character triples, developed by Navarro and Sp\"ath, by taking into account the action of Galois automorphisms on characters. This new technique, together with previous results of Ladisch and Turull,…

Representation Theory · Mathematics 2019-06-28 Gabriel Navarro , Britta Späth , Carolina Vallejo

As a step to establish the McKay conjecture on character degrees of finite groups, we verify the inductive McKay condition introduced by Isaacs-Malle-Navarro for simple groups of Lie type $A_{n-1}$, split or twisted. Key to the proofs is…

Representation Theory · Mathematics 2013-05-29 Marc Cabanes , Britta Spaeth

In [7], G. Navarro proposed a refinement of the McKay conjecture involving a special class of Galois automorphisms. In [6] this new conjecture was verified by the author for the alternating groups A(n) when p=2. In this note the Navarro…

Representation Theory · Mathematics 2010-08-18 Rishi Nath

We refine the reduction theorem of the McKay Conjecture proved by Isaacs, Malle and Navarro. Assuming the inductive McKay condition, we obtain a strong version of the McKay Conjecture that gives central isomorphic character triples.

Representation Theory · Mathematics 2022-04-22 Damiano Rossi

Recently, Moret\'o and Rizo proposed a conjecture, known as the Picky Conjecture, proposing new character correspondences extending the McKay Conjecture. We prove the Picky Conjecture for all quasi-simple groups of Lie type for non-defining…

Representation Theory · Mathematics 2025-10-22 Gunter Malle , A. A. Schaeffer Fry
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