Couniform Modules
Epiform modules
Hollow modules
Coquasi Dedekind module
Copolyform modules
Small submodules
Semismall submodule
Coessential submodules.
In this paper we introduce and study a new concept named couniform modules, which is a dual notion of uniform modules, where an R-module M is said to be couniform if every proper submodule N of M is either zero or there exists a proper submodule N1 of N such that is small submodule of (denoted by ) Also many relationships are given between this class of modules and other related classes of modules. Finally, we consider the hereditary property between R-module M and R-module R in case M is couniform.
