Séminaire Lotharingien de Combinatoire, B84c (2022), 21 pp.

Jan Geuenich, Daniel Labardini-Fragoso and José Luis Miranda-Olvera

Quivers with Potentials Associated to Triangulations of Closed Surfaces with At Most Two Punctures

Abstract. We tackle the classification problem of non-degenerate potentials for quivers arising from triangulations of surfaces in the cases left open by Geiss, Labardini-Fragoso and Schröer. Namely, for once-punctured closed surfaces of positive genus, we show that the quiver of any triangulation admits infinitely many non-degenerate potentials that are pairwise not weakly right-equivalent; we do so by showing that the potentials obtained by adding the 3-cycles coming from triangles and a fixed power of the cycle surrounding the puncture are well behaved under flips and QP-mutations. For twice-punctured closed surfaces of positive genus, we prove that the quiver of any triangulation admits exactly one non-degenerate potential up to weak right-equivalence, thus confirming the veracity of a conjecture of the aforementioned authors.

Received: January 31, 2021. Accepted: February 8, 2022. Final Version: February 8, 2022.

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