Cluster-Cyclic Quivers with Three Vertices and the Markov Equation
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Acyclic cluster algebras have an interpretation in terms of tilting objects in a Calabi-Yau category defined by some hereditary algebra. For a given quiver Q it is thus desirable to decide if the cluster algebra defined by Q is acyclic. We call Q cluster-acyclic in this case, otherwise cluster-cyclic. In this note we classify the cluster-cyclic quivers with three vertices using a Diophantine equation studied by Markov.
KeywordsCluster algebras Mutations Braid group
Mathematics Subject Classification (2000)16G20
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