Flat model structures under excellent extensions

Flat model structures under excellent extensions
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优秀扩展下的扁平化模型结构

DOI:
10.2989/16073606.2019.1605545
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发表时间:
2020-08
影响因子:
0.7
通讯作者:
Ren Wei
Ren Wei
中科院分区:
数学4区
文献类型:
--
作者:
Ren Wei

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本文证明了吉莱斯皮平坦模型结构中的弱等价、上纤维化和纤维化在环的优良扩张下是不变的。作为应用,我们研究了无界复形沿着优外环的平坦维数和余挠维数
Abstract We prove that the weak equivalences, cofibrations and fibrations in Gillespie’s flat model structure are invariant under excellent extensions of rings. As applications, the flat and cotorsion dimensions of unbounded complexes along excellent exte