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arXiv 0908.4187math.AGmath.CT
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三角分类的增强唯一性

Uniqueness of enhancement for triangulated categories

Valery A. Lunts, Dmitri O. Orlov

摘要:

本文包含一般结果的唯一性DG增强三角范畴。作为结果,我们得到这样的唯一性的无界范畴的拟凝聚层,为三角范畴的完美复形,并为有界的导出范畴的拟射影概形上的凝聚层。如果一个计划是投射的,那么我们也证明了一个强唯一性的三角范畴的完美复形和有界导出范畴的相干层。这些结果直接意味着来自凝聚层的有界导出范畴和射影概形上的完美复形的三角化范畴的完全忠实函子可以用乘积上的对象来表示。

英文摘要:

The paper contains general results on the uniqueness of a DG enhancement for triangulated categories. As a consequence we obtain such uniqueness for the unbounded categories of quasi-coherent sheaves, for the triangulated categories of perfect complexes, and for the bounded derived categories of coherent sheaves on quasi-projective schemes. If a scheme is projective then we also prove a strong uniqueness for the triangulated category of perfect complexes and for the bounded derived categories of coherent sheaves. These results directly imply that fully faithful functors from the bounded derived categories of coherent sheaves and the triangulated categories of perfect complexes on projective schemes can be represented by objects on the product.

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