A Kind Of Generalizations Of Ding Homological Modules And Homological Properties Of Strongly N-Dc-Modules

In this paper, some homological properties of (n,m)-strongly Ding injcctive modules and strongly n-Dc-modules arc investigated. Firstly, we introduce (n, m)-strongly Ding injective modules, and discuss some properties of (n,m)-strongly Ding injective modules and equivalent characterizations of these modules. Secondly, we also study strongly n-Dc-projective modules and strongly n-Dc-injective modules. At last, we consider some results of (n, m)-strongly Ding modules on ring changes.