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A construction of support $\tau$-tilting modules over $\tau$-tilting finite algebras

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The notion of (semi)bricks, regarded as a generalization of (semi)simple modules, appeared in a paper of Ringel in 1976. In recent years, there has been several new developments motivated by links to {\tau}-tilting theory studied by Demonet-Iyama-Jasso and Asai. In this paper, we will discuss how to glue semibricks along a recollement with the intermediate extension functor similar to gluing simple modules by Beilinson-Bernstein-Deligne. As an application, we investigate the behavior of {\tau}-tilting finite under recollements of module categories of algebras. Moreover, we give some examples to show the construction of support {\tau}-tilting modules over {\tau}-tilting finite algebras by gluing semibricks via recollements.

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ICE-closed subcategories and epibricks over recollements

math.RT · 2025-02-06 · conditional · novelty 5.0

Over a recollement of abelian categories, ICE-closed subcategories, epibricks and monobricks glue and reduce along the recollement, yielding a bijection for ICE-closed subcategories under a natural containment condition.

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  • ICE-closed subcategories and epibricks over recollements math.RT · 2025-02-06 · conditional · none · ref 36 · internal anchor

    Over a recollement of abelian categories, ICE-closed subcategories, epibricks and monobricks glue and reduce along the recollement, yielding a bijection for ICE-closed subcategories under a natural containment condition.