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math.CT2026
Three homological invariants under cleft extensions
Yajun Ma, Junling Zheng, Yu-Zhe Liu
In this paper, we investigate the behavior of Igusa-Todorov distances, extension and Rouquier dimensions under cleft extensions of abelian categories. We apply our results to Morit…
math.CT2024
Admissible weak factorization systems on extriangulated categories
Yajun Ma, Hanyang You, Dongdong Zhang +1
Extriangulated categories, introduced by Nakaoka and Palu, serve as a simultaneous generalization of exact and triangulated categories. In this paper, we first introduce the concep…