Geodesic
Two results of $n$-exangulated categories
Czechoslovak Mathematical Journal, Tome 74 (2024) no. 1, pp. 177-189
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M. Herschend, Y. Liu, H. Nakaoka introduced $n$-exangulated categories, which are a simultaneous generalization of $n$-exact categories and $(n+2)$-angulated categories. This paper consists of two results on $n$-exangulated categories: (1) we give an equivalent characterization of axiom (EA2); (2) we provide a new way to construct a closed subfunctor of an $n$-exangulated category.
M. Herschend, Y. Liu, H. Nakaoka introduced $n$-exangulated categories, which are a simultaneous generalization of $n$-exact categories and $(n+2)$-angulated categories. This paper consists of two results on $n$-exangulated categories: (1) we give an equivalent characterization of axiom (EA2); (2) we provide a new way to construct a closed subfunctor of an $n$-exangulated category.
DOI : 10.21136/CMJ.2023.0042-23
Classification : 18E10, 18G80
Keywords: $n$-exangulated category; homotopy cartesian square; half exact functor 
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He, Jian; He, Jing; Zhou, Panyue. Two results of $n$-exangulated categories. Czechoslovak Mathematical Journal, Tome 74 (2024) no. 1, pp. 177-189. doi: 10.21136/CMJ.2023.0042-23

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