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Lattice structure in cluster algebra of finite type and non-simply-laced Ingalls-Thomas bijection

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arxiv 2211.08935 v6 pith:2OW5TOMO submitted 2022-11-16 math.RT math.CO

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keywords latticealgebraclusterfinitetypealgebrasanti-isomorphicclusters
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abstract

In this paper, we demonstrate that the lattice structure of a set of clusters in a cluster algebra of finite type is anti-isomorphic to the torsion lattice of a certain Geiss-Leclerc-Schr\"oer (GLS) path algebra and to the $c$-Cambrian lattice. We prove this by explicitly describing the exchange quivers of cluster algebras of finite type. Specifically, we prove that these quivers are anti-isomorphic to those formed by support $\tau$-tilting modules in GLS path algebras and to those formed by $c$-clusters consisting of almost positive roots.

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  1. Preorders on maximal chains: hyperplane arrangements, Cambrian lattices, and maximal green sequences

    math.CO 2025-06 conditional novelty 8.0 of 10

    Edge-labelled polygonal lattices carry preorders on square-equivalence classes of maximal chains that descend to contractions under lattice quotients, yielding new structural results for Cambrian lattices and the Kapr...

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