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Paper   IPM / M / 17617
School of Mathematics
  Title:   $n\mathbb{Z}$-Abelian and $n\mathbb{Z}$-Exact Categories
  Author(s): 
1.  Ramin Ebrahimi
2.  Alireza Nasr-Isfahani
  Status:   Published
  Journal: Quart. J. Math.
  Vol.:  74
  Year:  2023
  Pages:   1545-1570
  Supported by:  IPM
  Abstract:
In this paper we introduce nZ-abelian and nZ-exact categories by axiomatising properties of nZ-cluster tilting subcategories. We study this categories and show that every nZ-cluster tilting subcategory of an abelian (resp., exact) category has a natural structure of an nZ-abelian (resp., nZ-exact) category. Also we show that every small nZ-abelian category arise in this way, and discuss the problem for nZ-exact categories.

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