3 papers
math.RT2026
Chains of model structures arising from cotorsion pairs on extriangulated categories
Dandan Sun, Xiaoyan Yang, Dongdong Zhang +2
The main aim of this paper is to study chains of model structures arising from cotorsion pairs in extriangulated categories. Starting with a hereditary Hovey triple, we construct f…
math.CT2025
Ideal approximation theory in Frobenius categories
Dandan Sun, Zhongsheng Tan, Qikai Wang +1
Let be a Frobenius category and the full subcategory consisting of projective objects. The relations between special precovering (resp., precovering) ideals in $…
math.CT2024
Cotorsion pairs and Enochs Conjecture for object ideals
Dandan Sun, Qikai Wang, Haiyan Zhu
Let and be object ideals in an exact category . It is proved that is a perfect ideal cotorsion p…