Localized stated skein algebra and quantum cluster algebras conjecture

From papers

Let S\mathfrak{S} be a marked surface satisfying the assumptions of Theorem~, and let Sωfr(S){\mathscr S}_\omega^{\rm fr}(\mathfrak{S}) denote the localization of the stated SLn\operatorname{SL}_n-skein algebra at the multiplicative subset generated by its frozen variables. Let Aωfr(S)\mathscr{A}_{\omega}^{\rm fr}(\mathfrak{S}) and Uωfr(S)\mathscr{U}_{\omega}^{\rm fr}(\mathfrak{S}) be the corresponding localized quantum cluster and upper cluster algebras.

Localized skein–cluster conjecture. Under these assumptions,

Sωfr(S)=Aωfr(S)=Uωfr(S).{\mathscr S}_\omega^{\rm fr}(\mathfrak{S})= \mathscr{A}_{\omega}^{\rm fr}(\mathfrak{S}) =\mathscr{U}_{\omega}^{\rm fr}(\mathfrak{S}).

This is the conjectured full equivalence between the localized stated SLn\operatorname{SL}_n-skein algebra and the quantum cluster and upper cluster algebras; the supplied text does not give a resolution status beyond presenting it as a conjecture.

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Sources & referencesView supporting material

Primary source

Peigen Cao, Min Huang and Zhihao Wang, “Quantum cluster algebra realization for stated SL_n-skein algebras and rotation-invariant bases for polygons”, arXiv:2605.12114 (2026).

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