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Cluster tilting for one-dimensional hypersurface singularities
Idun ReitenBernhard KellerOsamu IyamaIgor Burbansubject
Pure mathematicsMathematics(all)General MathematicsMathematical analysisTilting theoryBirational geometryRepresentation theoryMathematics - Algebraic GeometryElliptic curveHypersurfaceSimple (abstract algebra)FOS: MathematicsGravitational singularityRepresentation Theory (math.RT)Algebraic Geometry (math.AG)Mathematics - Representation TheoryAssociative propertyMathematicsdescription
In this article we study Cohen-Macaulay modules over one-dimensional hypersurface singularities and the relationship with the representation theory of associative algebras using methods of cluster tilting theory. We give a criterion for existence of cluster tilting objects and their complete description by homological methods, using higher almost split sequences and results from birational geometry. We obtain a large class of 2-CY tilted algebras which are finite dimensional symmetric and satisfy $\tau^2=\id$. In particular, we compute 2-CY tilted algebras for simple and minimally elliptic curve singularities.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-04-01 | Advances in Mathematics |