A Special Kind Of Ding-modules And Their Properties

In this paper, n-strongly Ding projective modules, n-strongly Ding injectivemodules and n-strongly Gorenstein flat modules are investigated. First of all, weintroduce the notions of n-strongly Ding projective modules and n-strongly Dinginjective modules. We investigate the homological behavior of n-strongly Ding pro-jective modules and n-strongly Ding injective modules and equivalent characteri-zations of these modules. Then we give a method to construct a1-strongly Dingprojective module from a n-strongly Ding projective module. Also we study the re-lation between m-strongly Ding projective modules and n-strongly Ding projectivemodules whenever m=n. At last, we consider some results on ring changes.