Homological epimorphisms in functor categories and singularity categories

Juan Andrés Orozco Gutiérrez, Valente Santiago Vargas

Given a homological epimorphism $\pi :\mathcal{C}⟶\mathcal{C}/\mathcal{I}$ between $K$-categories, we show that if the ideal $\mathcal{I}$ satisfies certain conditions,…