The inductive Alperin weight condition for finite groups

From papers

Let pp be a prime, let kk be an algebraic closure of Fp\mathbb{F}_p, let Γ\Gamma be the Galois group of k/Fpk/\mathbb{F}_p, and let GG be a finite group. Let Aut(G)\operatorname{Aut}(G) act on the simple modules and weights, and for a central idempotent bb let Aut(G)b\operatorname{Aut}(G)_b denote its stabiliser. Inductive Alperin weight condition. (i) For any finite group GG, there exists a bijection

S(kG)W(kOG)\mathcal{S}(kG)\to\mathcal{W}(k\mathcal{O}_G)

commuting with the action of Aut(G)\operatorname{Aut}(G). (ii) For any finite group GG and any central idempotent bb of kGkG, there exists a bijection

S(kGb)W(kOG,b)\mathcal{S}(kGb)\to\mathcal{W}(k\mathcal{O}_G,b)

commuting with the action of Aut(G)b\operatorname{Aut}(G)_b. This condition is extracted from the inductive blockwise Alperin weight condition and is attributed in the paper to Navarro–Tiep and Späth.

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Sources & referencesView supporting material

Primary source

Xin Huang, “The Galois Alperin weight conjecture for finite category algebras”, arXiv:2604.06166 (2026).

Additional references

2 papers in this index state this conjecture (2023–2026). The statement above is taken from the most recent of them; the others are arXiv:2307.13809.

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