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Original Articles

When is homR(M,−) equal to homR(M,−) in the category R-gr?

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Pages 3171-3181 | Received 01 May 1993, Published online: 27 Jun 2007

References

  • Arnold , D.M. 1975 . Abelian groups, A, such that Hom(A, -) preserves direct sums of copies of A . Pacific J. Math. , 56 : 7 – 20 .
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  • Mitchell , B. 1965 . Theory of Categories , New York : Academic Press .
  • Nǎstǎsescu , C. 1989 . Some constructions over graded rings . Applications, J. Algebra , 120 : 119 – 381 .
  • Nǎstǎsescu , C. and Van Oystaeyen , F. 1982 . Graded Ring Theory , Amsterdam : North-Holland .
  • Popescu , N. 1973 . Abelian Categories with Applications to Rings and Modules , London : Academic Press .
  • Rentschler , R. 1969 . Surles modules M tels que Hom(M,-) commute avecles sommes directes . C.R. Acad. Sci. Paris. , 268 : 930 – 933 .
  • Stenström , B. 1975 . Rings of Quotients , Berlin : Springer-Verlag .

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