hal-00586612, version 2
Stable categories of Cohen-Macaulay modules and cluster categories
(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 :
- CNRS : UMR7501 – Université de Strasbourg
- 2 :
- Nagoya University
- 3 :
- 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
- http://hal.archives-ouvertes.fr/hal-00586612
- oai:hal.archives-ouvertes.fr:hal-00586612
- Contributeur :
- Soumis le : Mercredi 11 Juillet 2012, 13:43:20
- Dernière modification le : Mercredi 11 Juillet 2012, 13:44:11



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