Galois Alperin weight conjecture for a finite group

Fix a prime pp and a finite group GG. Let H\mathcal{H} be the Galois automorphism group associated with the pp-modular system in the source. Let W(G)\mathcal{W}(G) be the set of pp-weights of GG, with the action of H×Aut(G)\mathcal{H}\times\operatorname{Aut}(G) induced by Galois automorphisms and group automorphisms. Galois Alperin weight conjecture for GG. There exists an H×Aut(G)\mathcal{H}\times\operatorname{Aut}(G)-equivariant surjective map

f:W(G)IBr(G)f:\mathcal{W}(G)\longrightarrow\operatorname{IBr}(G)

such that ff maps only GG-conjugate weights to a common Brauer character. This formulation is equivalent to requiring a well-defined equivariant bijection between GG-orbits of weights and irreducible Brauer characters. The source presents it as a conjecture, and no general resolution is stated.

Sources & referencesView supporting material

Primary source

Zhicheng Feng, Qulei Fu and Yuanyang Zhou, “A reduction theorem for the Navarro Alperin weight conjecture”, arXiv:2312.02594 (2026).

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