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On the relation between n-cotorsion pairs and (n+1)-cluster tilting subcategories (1907.13541v1)

Published 31 Jul 2019 in math.RT and math.CT

Abstract: A notion of $n$-cotorsion pairs in an extriangulated category with enough projectives and enough injectives is defined in this article. We show that there exists a one-to-one correspondence between $n$-cotorsion pairs and $(n+1)$-cluster tilting subcategories. As an application, this result generalizes the work by Huerta, Mendoza and P\'{e}rez in an abelian case. Finally, we give some examples illustrating our main result.

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