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τ-Tilting modules over one-point extensions by a simple module at a source point
Journal of Algebra and Its Applications ( IF 0.5 ) Pub Date : 2021-03-18 , DOI: 10.1142/s0219498822501225
Hanpeng Gao 1
Affiliation  

Let B be an one-point extension of a finite-dimensional k-algebra A by a simple A-module at a source point i. In this paper, we classify the τ-tilting modules over B. Moreover, it is shown that there are equations |τtiltB|=|τtiltA|+|τtiltA/ei|and|sτtiltB|=2|sτtiltA|+|sτtiltA/ei|. As a consequence, we can calculate the numbers of τ-tilting modules and support τ-tilting modules over linearly Dynkin type algebras whose square radical are zero.



中文翻译:

τ-通过源点处的简单模块在单点扩展上倾斜模块

是有限维的单点扩展ķ-代数一个通过一个简单的一个-模块在源点一世. 在本文中,我们将τ- 倾斜模块. 此外,证明存在等式|τ-倾斜|=|τ-倾斜一个|+|τ-倾斜一个/e一世||sτ-倾斜|=2|sτ-倾斜一个|+|sτ-倾斜一个/e一世|.因此,我们可以计算出τ- 倾斜模块和支持τ-在平方根为零的线性 Dynkin 代数上倾斜模块。

更新日期:2021-03-18
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