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arXiv · 2310.16925

Snake Graphs and Caldero-Chapoton Functions from Triangulated Orbifolds

Esther Banaian·Yadira Valdivieso
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Abstract

Generalized cluster algebras from orbifolds were defined by Chekhov and Shapiro to give a combinatorial description of their Teichm\"uller spaces. One can also assign a gentle algebra to a triangulated orbifold, as in the work of Labardini-Fragoso and Mou. In this work, we show that the Caldero-Chapoton map and the snake graph expansion map agree for arcs in triangulated orbifolds and arc modules, and similarly for closed curves and certain band modules. As a consequence, we have a bijection between some indecomposable modules over a gentle algebra and cluster variables in a generalized cluster algebra where both algebras arise from the same triangulated orbifold.

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Esther Banaian, Yadira Valdivieso. 2023-10-25. Snake Graphs and Caldero-Chapoton Functions from Triangulated Orbifolds. https://doi.org/10.1016/j.jalgebra.2025.03.006

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