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Quivers with relations arising from clusters (A_n case)

Cluster algebras were introduced by S. Fomin and A. Zelevinsky in connection with dual canonical bases. Let U be a cluster algebra of type A_n. We associate to each cluster C of U an abelian category Cat_C such that the indecomposable objects of Cat_C are in natural correspondence with the cluster variables of U which are not in C. We give an algebraic realization and a geometric realization of Cat_C. Then, we generalize the ``denominator Theorem'' of Fomin and Zelevinsky to any cluster.

preprint2004arXivOpen access
Philippe CalderoFrederic ChapotonRalf Schiffler
math.RTmath.RA
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Philippe CalderoFrederic ChapotonRalf Schiffler

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