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hal-00586612, version 2

Stable categories of Cohen-Macaulay modules and cluster categories

Claire Amiot () 1, Osamu Iyama 2, Idun Reiten () 3

(18/04/2011)

Résumé : By Auslander's algebraic McKay correspondence, the stable category of Cohen-Macaulay modules over a simple singularity is equivalent to the $1$-cluster category of the path algebra of a Dynkin quiver (i.e. the orbit category of the derived category by the action of the Auslander-Reiten translation). In this paper we give a systematic method to construct a similar type of triangle equivalence between the stable category of Cohen-Macaulay modules over a Gorenstein isolated singularity $R$ and the generalized (higher) cluster category of a finite dimensional algebra $\Lambda$. The key role is played by a bimodule Calabi-Yau algebra, which is the higher Auslander algebra of $R$ as well as the higher preprojective algebra of an extension of $\Lambda$. As a byproduct, we give a triangle equivalence between the stable category of graded Cohen-Macaulay $R$-modules and the derived category of $\Lambda$. Our main results apply in particular to a class of cyclic quotient singularities and to certain toric affine threefolds associated with dimer models.

  • 1 :  Institut de Recherche Mathématique Avancée (IRMA)
  • CNRS : UMR7501 – Université de Strasbourg
  • 2 :  Nagoya University
  • Nagoya University
  • 3 :  Institutt for matematiske fag (IMF)
  • Trondheim University
  • Domaine : Mathématiques/Théorie des représentations
    Mathématiques/Géométrie algébrique
    Mathématiques/Algèbre commutative
  • Mots-clés : Cohen-Macaulay modules – stable categories – Calabi-Yau categories – cluster categories – cluster tilting – Auslander algebras – preprojective algebras – Calabi-Yau algebras – dimer models
  • Commentaire : 38 pages – new section added with applications of our results to dimer models.
  • Versions disponibles :  v1 (19-04-2011) v2 (11-07-2012)
 
  • hal-00586612, version 2
  • oai:hal.archives-ouvertes.fr:hal-00586612
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  • Soumis le : Mercredi 11 Juillet 2012, 13:43:20
  • Dernière modification le : Mercredi 11 Juillet 2012, 13:44:11