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 Direct Projective Modules with the Summand Sum Property Commun. Korean Math. Soc. 1997 Vol. 12, No. 4, 865-868 Chang Woo Han, Su Jeong Choi Dong-A University, Dong-A University Abstract : Let $R$ be a ring with a unity and let $M$ be a unitary left $R$-module. In this paper, we establish [5, Proposition 2.8] by showing the proof of it. Moreover, from the above result, we obtain some properties of direct projective modules which have the summand sum property. Keywords : direct projective module, summand sum property, summand intersection property MSC numbers : 16D20, 16D40 Downloads: Full-text PDF