2-McKay conjecture for 2-representations

Let HH be a finite group, let pp be a fixed prime, let ZZ be the centre of HH, let PP be a Sylow pp-subgroup, and let NN be its normaliser. Let GG be the group of automorphisms of HH that preserve PP and restrict to the identity on ZZ. For each character χ:ZC×\chi:Z\to{\mathbb C}^{\times}, let

ΘH(χ)=ΘCHpCZC(χ),ΘN(χ)=ΘCNpCZC(χ).\Theta_H(\chi)=\Theta_{{\mathbb C}H_{p'}\otimes_{{\mathbb C}Z}{\mathbb C}(\chi)},\qquad \Theta_N(\chi)=\Theta_{{\mathbb C}N_{p'}\otimes_{{\mathbb C}Z}{\mathbb C}(\chi)}.

2-McKay conjecture. For each character χ\chi, the 2-representations ΘH(χ)\Theta_H(\chi) and ΘN(χ)\Theta_N(\chi) of GG are isomorphic. This is a 2-representation-theoretic strengthening of the McKay comparison between HH and the normaliser of a Sylow subgroup, motivated by the notion of McKay-goodness.

Sources & referencesView supporting material

Primary source

Dmitriy Rumynin and Alex Wendland, “2-Groups, 2-Characters, and Burnside Rings”, arXiv:1604.02926 (2018).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.