The covering conjecture for localized skein algebras

Let Σ\Sigma be an unpunctured surface, let Δ\Delta be an ideal triangulation of Σ\Sigma, and for each internal edge Eeint(Δ)E\in e_{\mathrm{int}}(\Delta) let Ssl3,Σq[(Δ;E)1]\mathscr{S}^q_{\mathfrak{sl}_3,\Sigma}[(\Delta;E)^{-1}] be the Ore localization obtained by inverting the elementary webs along the edges of Δ\Delta other than EE, together with A1/2A^{1/2}. Covering conjecture. For every ideal triangulation Δ\Delta of Σ\Sigma,

Ssl3,Σq[1]=Eeint(Δ)Ssl3,Σq[(Δ;E)1].\mathscr{S}^q_{\mathfrak{sl}_3,\Sigma}[\partial^{-1}] = \bigcap_{E\in e_{\mathrm{int}}(\Delta)}\mathscr{S}^q_{\mathfrak{sl}_3,\Sigma}[(\Delta;E)^{-1}].

This conjecture would identify the boundary-localized skein algebra as the intersection of the codimension-one localizations and is used in the paper to derive its equality with the upper cluster algebra.

Sources & referencesView supporting material

Primary source

Tsukasa Ishibashi and Wataru Yuasa, “Skein and cluster algebras of unpunctured surfaces for sl_3”, arXiv:2101.00643 (2023).

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