Maximal rigid subcategories in 2-Calabi-Yau triangulated categories

Maximal rigid subcategories in 2-Calabi-Yau triangulated categories
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2-Calabi-Yau 三角类别中的最大刚性子类别

DOI:
10.1016/j.jalgebra.2011.09.027
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发表时间:
2010-04
期刊:
影响因子:
0.9
通讯作者:
Zhu, Bin
Zhu, Bin
中科院分区:
数学3区
文献类型:
--
作者:
Zhou, Yu;Zhu, Bin

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研究了2-CY三角范畴中的函有限极大刚性子范畴及其自同态代数。簇倾斜子范畴显然是函有限的和极大刚性的,我们证明了匡威亦然,如果2-CY三角范畴允许一个簇倾斜子范畴。作为Keller和Reiten(2007)[KR]结果的推广,我们证明了任意函有限极大刚性子范畴都是Gorenstein维数不超过1的Gorenstein.类似于簇倾斜子范畴,我们可以在任何不可分解的对象上变异极大刚性子范畴。如果两个极大刚性对象通过简单变换可达,则它们的自同态代数具有相同的表示类型。
We study the functorially finite maximal rigid subcategories in 2-CY triangulated categories and their endomorphism algebras. Cluster tilting subcategories are obviously functorially finite and maximal rigid; we prove that the converse is true if the 2-CY triangulated categories admit a cluster tilting subcategory. As a generalization of a result of Keller and Reiten (2007) [KR], we prove that any functorially finite maximal rigid subcategory is Gorenstein with Gorenstein dimension at most 1. Similar as cluster tilting subcategory, one can mutate maximal rigid subcategories at any indecomposable object. If two maximal rigid objects are reachable via simple mutations, then their endomorphism algebras have the same representation type.
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