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math.RT2026
Exceptional model structures and the induced extriangulated categories
Chencheng Zhang, Pu Zhang
A Hovey triple is {\it exceptional}, if is not a Frobeni…
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…