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A note on divisible and codivisible dimension

Published online by Cambridge University Press:  17 April 2009

Paul E. Bland
Affiliation:
Department of Mathematics, Eastern Kentucky University, Richmond, Kentucky, USA.
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Abstract

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In this paper the right global divisible dimension and the right global codivisible dimension of a ring R are studied relative to a torsion theory of modR. The main result shows that if (A, B) is a central splitting torsion theory on modR. then the right global divisible dimension of R with respect to (B, A) is equal to the right global codivisible dimension of R with respect to (A, B).

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 1975

References

[1]Baer, Reinhold, “Abelian groups that are direct summands of every containing abelian group”, Bull. Amer. Math. Soc. 46 (1940), 800806.CrossRefGoogle Scholar
[2]Bernhardt, Robert L., “Splitting hereditary torsion theories over semi-perfect rings”, Proc. Amer. Math. Soc. 22 (1969), 681687.CrossRefGoogle Scholar
[3]Bland, Paul E., “Perfect torsion theories”, Proc. Amer. Math. Soc. 41 (1973), 349355.CrossRefGoogle Scholar
[4]Faith, Carl, “Kings with ascending condition on annihilators”, Nagoya Math. J. 27 (1966), 179191.CrossRefGoogle Scholar
[5]Faith, Carl and Walker, Elbert A., “Direct-sum representations of injective modules”, J. Algebra 5 (1967), 203221.Google Scholar
[6]Kaplansky, Irving, Fields and rings, 2nd ed. (Chicago Lectures in Mathematics Series. University of Chicago Press, Chicago and London, 1972).Google Scholar
[7]Jans, J.P., “Some aspects of torsion”, Pacific J. Math. 15 (1965), 12491259.CrossRefGoogle Scholar
[8]Lambek, Joachim, Torsion theories, additive semantics, and rings of quotients (Lecture Notes in Mathematics, 177. Springer-Verlag, Berlin, Heidelberg, New York, 1971).CrossRefGoogle Scholar
[9]Rangaswamy, K.M., “Codivisible modules”, Comm. Algebra (to appear).Google Scholar
[10]Stenström, Bo, Rings and modules of quotients (Lecture Notes in Mathematics, 237. Springer-Verlag, Berlin, Heidelberg, New York, 1971).CrossRefGoogle Scholar
[11]Teply, Mark L., “Homological dimension and splitting torsion theories”, Pacific J. Math. 34 (1970), 193205.CrossRefGoogle Scholar