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MC2 Rings

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In this paper, we first study some characterizations of left MC2 rings. Next, by introducing left nil−injective modules, we discuss and generalize some well known results for a ring whose simple singular left modules are Y J-injective. Finally, as a byproduct of these results we are able to show that if R is a left MC2 left Goldie ring whose every simple singular left R−module is nil−injective and GJcp−injective, then R is a finite product of simple left Goldie rings.

Abstract

In this paper, we first study some characterizations of left MC2 rings. Next,by introducing left nil−injective modules, we discuss and generalize some well known results for a ring whose simple singular left modules are Y J-injective. Finally, as a byproduct of these results we are able to show that if R is a left MC2 left Goldie ring whose every simple singular left R−module is nil−injective and GJcp−injective, then R is a finite product of simple left Goldie rings.

참고문헌 (14)

  1. J. C. Wei, "The rings characterized by minimal left ideal", Acta. Math. Sinica. English. Series, 21(3), pp.473~482 (2005)
  2. W. K. Nicholson, "Rings with projective socle", Proc. Amer. Math. Soc, 102, pp.443~450 (1988)
  3. W. K. Nicholson, "Minijective rings", J. Alg, 187, pp.548~578 (1997)
  4. T. Y. Lam, "Quas-duo rings and stable range descent", Journal of pure and applied algebra, 195, pp.243~259 (2005)
  5. Roger Yue Chi Ming, "On Quasi-Frobeniusean and Artinian rings", Publications De Linstitut Math ´ematique, 33, pp.239~245 (1983)
  6. Roger Yue Chi Ming, "On quasi-injectivity and Von Neumann regularity", Mounatshefte fr Math, 95, pp.25~32 (1983)
  7. Jin Yong Kim, "Certain rings whose simple singular modules are Gp−injective", Proc. Japan Acad. Ser. A, 81, pp.125~128 (2005)
  8. W. K. Nicholson, "Weakly continuous and C2-rings", Comm in Alg, 29(6), pp.2429~2466 (2001)
  9. W. Xue, "A note on Y J−injectivity", Riv. Mat. Univ. Parma, 6(1), pp.31~37 (1998)
  10. J. Chen, "On generalizations of injectivity, in International Symposium on Ring Theory (Kyongju, 1999)", pp.85~94 (2001), Birkhauser, Boston, Boston, MA
  11. Roger Yue Chi Ming, "On p−injectivity and generalizations", Riv. Mat. Univ. Parma, 5(5), pp.183~188 (1996)
  12. Roger Yue Chi Ming, "On simple singular GP-injective modules", Comm in Alg, 27(5), pp.2087~2096 (1999)
  13. W. K. Nicholson, "Rings with the dual of the isomorphism theorem", Journal of Alg, 271, pp.391~406 (2004)
  14. G. O. Michler, "On rings whose simple modules are injective", J. Alg, 25, pp.185~201 (1973)

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