Virtually abelian groups' linear profile conjecture

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Let GG be a finitely generated virtually abelian group, and let rank⁡G\operatorname{rank} G denote its rank. Write DG,Slin(n)\mathcal{D}_{G,S}^{lin}(n) for the linear sofic profile of GG relative to a finite generating set SS, and use ≃\simeq for the profile-equivalence relation. The virtually abelian linear-profile conjecture.

DG,Slin(n)≃nrank⁡G.\mathcal{D}_{G,S}^{lin}(n)\simeq n^{\operatorname{rank} G}.

The source explains that this is motivated by known stability results, but that stability of virtually abelian groups with respect to the rank metric remains unknown; a partial result is cited there.

References

Primary source

Goulnara Arzhantseva and Pierre-Alain Cherix, “Quantifying metric approximations of discrete groups”, arXiv:2008.12954 (2020).

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