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arXiv · 2106.14745

The inductive McKay-Navarro conditions for the prime 2 and some groups of Lie type

L. Ruhstorfer·A. A. Schaeffer Fry
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Abstract

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 suggests that the values of the characters on either side of this bijection should also be related, proposing that the bijection commutes with certain Galois automorphisms. Recently, Navarro--Spaeth--Vallejo have reduced the McKay--Navarro conjecture to certain "inductive" conditions on finite simple groups. We prove that these inductive McKay--Navarro (also called the inductive Galois--McKay) conditions hold for the prime $\ell = 2$ for several groups of Lie type, including the untwisted groups without nontrivial graph automorphisms.

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L. Ruhstorfer, A. A. Schaeffer Fry. 2021-06-28. The inductive McKay-Navarro conditions for the prime 2 and some groups of Lie type. https://arxiv.org/abs/2106.14745

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