Torsion classes, wide subcategories and localisations

Torsion classes, wide subcategories and localisations
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DOI:
10.1112/blms.12033
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发表时间:
2015-03
影响因子:
0.9
通讯作者:
F. Marks;J. Šťovíček
F. Marks;J. Šťovíček
中科院分区:
数学3区
文献类型:
--
作者:
F. Marks;J. Šťovíček

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对于有限维代数a,我们在mod(a)中建立了扭转类与广义子范畴之间的对应关系。在A是表示有限的情况下,我们得到了这两类子范畴之间的显式双射。此外,我们将我们的结果翻译成环表胚和普遍定位的语言。结果表明,表示有限代数上的普遍局部化是由扭转类分类的,并且支持τ‐倾斜模块。
For a finite‐dimensional algebra A , we establish correspondences between torsion classes and wide subcategories in mod(A) . In case A is representation finite, we obtain an explicit bijection between these two classes of subcategories. Moreover, we translate our results to the language of ring epimorphisms and universal localisations. It turns out that universal localisations over representation finite algebras are classified by torsion classes and support τ ‐tilting modules.