Remarks on N0-Injectivity

This article is a continuation of e. momtahan’s work in which he studied the literature via countable injectivity. along this line, n0-ikeda-nakayama rings have been studied and among other things, new characterizations of basically disconnected and extremally discon- nected spaces have been given. furthermore we will observe that a boolean ring is n0-self-injective if and only if it is an n0-in ring.