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arXiv 2108.07964math.RTmath.CT
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外三角分类中的减淤

Silting reduction in extriangulated categories

Yu Liu, Panyue Zhou, Yu Zhou, Bin Zhu

摘要:

最近,Adachi和Tsukamoto在外三角形分类中引入了Presliting和Soldering子分类。本文证明了外三角范畴$\mathcal B$关于满足一定条件的预充子范畴$\mathcal W$的Gabriel-Zisman局部化$\mathcal B/({\rm thick}\mathcal W)$可实现为$\mathcal B$的一个子因子范畴.这推广了Iyama-Yang关于三角形分类的淤积减少的结果。然后讨论了外三角范畴中的淤积子范畴与倾斜子范畴之间的关系,这是我们所得结果的一类重要例子。特别地,对于有限维Gorenstein代数,我们得到了Happel和Chen-Zhang关于奇异范畴的相对描述。

英文摘要:

Presilting and silting subcategories in extriangulated categories were introduced by Adachi and Tsukamoto recently. In this paper, we prove that the Gabriel-Zisman localization $\mathcal B/({\rm thick}\mathcal W)$ of an extriangulated category $\mathcal B$ with respect to a presilting subcategory $\mathcal W$ satisfying certain condition can be realized as a subfactor category of $\mathcal B$. This generalizes the result by Iyama-Yang for silting reduction on triangulated categories. Then we discuss the relation between silting subcategories and tilting subcategories in extriangulated categories, this gives us a kind of important examples of our results. In particular, for a finite dimensional Gorenstein algebra, we get the relative version of the description of the singularity category due to Happel and Chen-Zhang by this reduction.

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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