The formal-dissection realization conjecture for derived-equivalent gentle and skew-gentle algebras

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Let AA be a graded gentle or skew-gentle algebra, and let S=(S,Σ,η)\mathbf S=(S,\Sigma,\eta) be the graded surface associated to AA. For a formal dissection Δ\Delta of S\mathbf S, let AΔ\mathbf A_\Delta be its associated formal differential graded algebra. Formal-dissection realization conjecture. For any graded associative algebra BB which is (perfect) derived equivalent to AA, there exists a formal dissection Δ\Delta of S\mathbf S such that

BH(AΔ)B\simeq \mathrm{H}^\bullet(\mathbf A_\Delta)

as graded associative algebras. This conjecture is presented as a converse to the theorem that formal dissections yield graded skew-gentle algebras and that formal-generator endomorphism algebras are derived equivalent to graded skew-gentle algebras. Its general status is not specified in the supplied text.

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Sources & referencesView supporting material

Primary source

Severin Barmeier and Zhengfang Wang, “Fukaya categories of orbifold surfaces in representation theory”, arXiv:2602.17370 (2026).

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