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arXiv 0705.0102math.CT
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三角范畴中的紧Corigid对象与Co-t-结构

Compact Corigid Objects in Triangulated Categories and Co-t-structures

David Pauksztello

摘要:

在星野、加藤和宫知的工作中,作者研究了由三角范畴T的紧致对象C诱导的t-结构,T在Iyama和Yoshino的意义上是刚性的。Hoshino、Kato和Miyachi证明了这样的对象在T上产生一个非退化的t-结构,其心等价于Mod(End(C)^op)。在三角范畴中的刚性对象可以被认为表现得像链微分分次代数(DGAs)。类似地,观察行为类似于上链DGA的对象自然会给出corigid对象的对偶概念。在这里,我们看到,一个三角范畴T的紧致corigid对象S,诱导出一个类似于t-结构的结构,我们称之为co-t-结构。我们还证明了这个非退化的co-t-结构的上心等价于Mod(End(S)^op),因此是T的一个交换子范畴.

英文摘要:

In the work of Hoshino, Kato and Miyachi, the authors look at t-structures induced by a compact object, C, of a triangulated category, T, which is rigid in the sense of Iyama and Yoshino. Hoshino, Kato and Miyachi show that such an object yields a non-degenerate t-structure on T whose heart es equivalent to Mod(End(C)^op). Rigid objects in a triangulated category can be thought of as behaving like chain differential graded algebras (DGAs). Analogously, looking at objects which behave like cochain DGAs naturally gives the dual notion of a corigid object. Here, we see that a compact corigid object, S, of a triangulated category, T, induces a structure similar to a t-structure which we shall call a co-t-structure. We also show that the coheart of this non-degenerate co-t-structure is equivalent to Mod(End(S)^op), and hence an abelian subcategory of T.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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