Finitely phantom morphisms and finitely split epimorphisms

L Mao - Colloquium Mathematicum, 2020 - impan.pl
Let $ R $ be a ring. A morphism $\alpha: X\rightarrow Y $ of left $ R $-modules is called a
finitely phantom morphism if for each morphism ${\beta: F\rightarrow X} $ with $ F $ finitely …