关于稳定的非交换crepant分解
On steady non-commutative crepant resolutions
摘要:
我们引入特殊类的非交换crepant决议(= NCCR),我们称之为稳定和分裂。我们证明了一个奇点有稳定分裂NCCR当且仅当它是有限阿贝尔群的商奇点。我们应用我们的结果复曲面奇点和二聚体模型。
英文摘要:
We introduce special classes of non-commutative crepant resolutions (= NCCR) which we call steady and splitting. We show that a singularity has a steady splitting NCCR if and only if it is a quotient singularity by a finite abelian group. We apply our results to toric singularities and dimer models.
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