Auslander's formula for contravariantly finite subcategories

نویسندگان

چکیده

Let $A$ be a right coherent ring and $\mathcal{X}$ contravariantly finite subcategory of ${\rm{mod}}\mbox{-}A$ containing projectives. In this paper, we construct recollement abelian categories $({\rm{mod}}_{0}\mbox{-}\mathcal{X}, {\rm{mod}}\mbox{-}\mathcal{X}, {\rm{mod}}\mbox{-}A)$, where ${\rm{mod}}_{0}\mbox{-}\mathcal{X}$ is full ${\rm{mod}}\mbox{-}\mathcal{X}$ consisting all functors vanishing on projective modules. As result, relative version Auslander's formula with respect to will given. Some examples applications provided.

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ژورنال

عنوان ژورنال: Journal of The Mathematical Society of Japan

سال: 2021

ISSN: ['1881-1167', '0025-5645']

DOI: https://doi.org/10.2969/jmsj/83308330