Uniqueness of crepant resolutions and symplectic singularities

Details Uniqueness of crepant resolutions and symplectic singularities Uniqueness of crepant resolutions and symplectic singularities

2003-06-05

arxiv.org/abs/math/0306091v2

Mathematics

Algebraic Geometry

This is an extended and revised version

Scientific paper

We prove the uniqueness of crepant resolutions for some quotient
singularities and for some nilpotent orbits. The finiteness of non-isomorphic
symplectic resolutions for 4-dimenensional symplectic singularities is proved.
We also give an example of symplectic singularity which admits two
non-equivalent symplectic resolutions.

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