Geometric Phantom Categories

Geometric Phantom Categories
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几何幻影类别

DOI:
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发表时间:
2012
期刊:
Publications mathématiques (Bures-sur-Yvette)
影响因子:
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通讯作者:
Dmitri Orlov
Dmitri Orlov
中科院分区:
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文献类型:
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作者:
S. Gorchinskiy;Dmitri Orlov

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本文给出了幻范畴的一种构造,即具有平凡Hochschild同调和平凡Grothendieck群的光滑射影簇上的凝聚层的有界导范畴中的容许三角化子范畴.我们还证明了这些幻影范畴在更强的意义上是幻影范畴,即它们具有平凡的K-动机,因此它们的所有高K-群也是平凡的。
In this paper we give a construction of phantom categories, i.e. admissible triangulated subcategories in bounded derived categories of coherent sheaves on smooth projective varieties that have trivial Hochschild homology and trivial Grothendieck group. We also prove that these phantom categories are phantoms in a stronger sense, namely, they has trivial K-motives and, hence, all their higher K-groups are trivial too.