3 papers
math.CT2026
Homotopic morphisms and diagram theorems in extriangulated categories
Chencheng Zhang, Xue-Song Lu, Pu Zhang
Homotopic morphisms of -triangles in extriangulated categories are introduced. Any morphism of -triangles is a composition of homotopic morphisms. Any morphis…
math.RT2025
Claus Michael Ringel's main contributions to Gorenstein-projective modules
Nan Gao, Xue-Song Lu, Pu Zhang
In this article we try to recall Claus Michael Ringel's works on the Gorenstein-projective modules. This will involve but not limited to his fundamental contributions, such as in,…
math.RT2025
Homotopy categories and fibrant model structures
Xue-Song Lu, Pu Zhang
The homotopy category of a model structure on a weakly idempotent complete additive category is proved to be equivalent to the additive quotient of the category of cofibrant-fibran…