Abstract

We study on cofinitely (strong) refinable modules as a proper generalization of (strongly) refinable modules. In this paper various properties of these modules are developed. It is shown that (1) every (cofinite) direct summand of a (cofinitely) refinable module is (cofinitely) refinable; (2) a module is cofinitely refinable if and only if every cofinite direct summands lift modulo every submodule of ; (3) a ring is Rad-supplemen-ted and left refinable if and only if it is semiperfect; (4) a semilocal ring is a left and right artinian serial ring with if and only if every left -module is strongly refinable. 2010 Mathematics Subject Classification. 16D10,16D40. Key words and phrases. (strongly) refinable module, cofinitely (strong) refinable module, semiperfect ring

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