Gornay's dimension conjecture for amenable groups

From papers

Let Γ\Gamma be an amenable group and let Ylp(Γ)nY\subseteq l^{p}(\Gamma)^{\oplus n} for some nNn\in \mathbb N. Let dimlpG(Y,Γ)\dim_{l^{p}}^{G}(Y,\Gamma) denote the lpl^{p}-dimension defined by Gornay, and let Σ\Sigma be a sofic approximation of Γ\Gamma. Gornay's dimension conjecture. For every sofic approximation Σ\Sigma of Γ\Gamma,

dimlpG(Y,Γ)=dimΣ,lp(Y,Γ).\dim_{l^{p}}^{G}(Y,\Gamma)=\dim_{\Sigma,l^{p}}(Y,\Gamma).

This conjecture asks whether Gornay's dimension agrees with the sofic lpl^{p}-dimension for amenable groups. The paper states that little progress has been made on it.

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Sources & referencesView supporting material

Primary source

Ben Hayes, “An l^p-Version of von Neumann Dimension for Banach Space Representation of Sofic Groups II”, arXiv:1302.2286 (2015).

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