Author/Authors :
Naoum, Adil G. University of Baghdad - College of Science - Department of Mathematics, Iraq , Al-Hashimi, Basil A. University of Baghdad - College of Science - Department of Mathematics, Iraq , Yaseen, Sahera M. University of Baghdad - College of Science - Department of Mathematics, Iraq
Abstract :
Let R be a commutative ring with identity. We call the proper submodule N of M a coquasi - invertible submodule if Hom(M،N)=0 the main purpose of this work is the study of the properties of coquasi - invertible submodules. and give definithon of corational submodule. Then show that if M is self projective, then N is coquasi - invertible submodule of M if and only if N is corational in M.
