BULLETIN OF THE IRANIAN MATHEMATICAL SOCIETY, cilt.38, sa.2, ss.433-445, 2012 (SCI-Expanded)
We investigate some properties of Rickart modules defined by Rizvi and Roman. Let R be an arbitrary ring with identity and M be a right R-module with S = End(R)(M). A module M is called to be Rickart if for any f is an element of S, (TM)(f) = Se, for some e(2) is an element of e 2 S. We prove that some results of principally projective rings and Baer modules can be extended to Rickart modules for this general settings.