Finiteness conditions and relative derived categories

Finiteness conditions and relative derived categories
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有限性条件和相关派生类别

DOI:
10.1016/j.jalgebra.2020.12.034
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发表时间:
2021-05
期刊:
影响因子:
0.9
通讯作者:
Tiwei Zhao
Tiwei Zhao
中科院分区:
数学3区
文献类型:
--
作者:
Lingling Tan;Dingguo Wang;Tiwei Zhao

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本文从模的有限条件出发,引入了一类精确结构,称为纯精确结构。我们利用n纯精确结构研究了模范畴的n纯派生范畴的性质,并证明n纯派生范畴具有经典派生范畴的许多优良性质。特别地,我们证明了有界纯派生范畴可以被实现为某些同伦范畴。我们还比较了经典有界派生范畴和纯有界派生范畴,证明了经典有界派生范畴可以用纯射影模来描述。
In this paper, we introduce a class of exact structures in terms of finiteness conditions of modules, which are calledn-pure exact structures. We investigate the properties ofn-pure derived categories of module categories usingn-pure exact structures, and show thatn-pure derived categories share many nice properties of classical derived categories. In particular, we show that boundedn-pure derived categories can be realized as certain homotopy categories. We also compare the classical bounded derived categories and the boundedn-pure derived categories, and show that the former can be described byn-pure projective modules.
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