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An approach to Boyle's conjecture

Published online by Cambridge University Press:  20 January 2009

Dinh van Huynh
Affiliation:
Institute of Mathematics, P.O. Box 631 Boho, Hanoi, Vietnam
S. Tariq Rizvi
Affiliation:
The Ohio State University at Lima, Lima, OH 45804, U.S.A.
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Abstract

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A ring R is called a right QI-ring if every quasi-injective right R-module is injective. The well-known Boyle's Conjecture states that any right QI-ring is right hereditary. In this paper we show that if every continuous right module over a ring R is injective, then R is semisimple artinian. In fact, if every singular continuous right R-module satisfying the restricted semisimple condition is injective, then R is right hereditary. Moreover, in this case, every singular right R-module is injective.

Type
Research Article
Copyright
Copyright © Edinburgh Mathematical Society 1997

References

REFERENCES

1. Boyle, A. K., Hereditary QI-rings, Trans. Amer. Math. Soc. 192 (1974), 115120.Google Scholar
2. Boyle, A. K., Injectives containing no proper quasi-injective submodules, Comm. Algebra 4 (1976), 775785.Google Scholar
3. Boyle, A. K. and Goodearl, K. R., Rings for which certain modules are injective, Pacific J. Math. 58 [1975], 4353.Google Scholar
4. Byrd, K. A., Rings whose quasi-injective modules are injective, Proc. Amer. Math. Soc. 33 (1972), 235240.Google Scholar
5. Chatters, A. W., The restricted minimum condition in noetherian hereditary rings, J. London Math. Soc. 4 (1971), 8387.Google Scholar
6. Cozzens, J. H., Homological properties of the ring of differential polynomials, Bull. Amer. Math. Soc. 76 (1970), 7579.Google Scholar
7. Cozzens, J. H. and Faith, C., Simple Noetherian Rings (Cambridge University Press, 1975).Google Scholar
8. Dung, N. V., Huynh, D. V., Smith, P. F. and Wisbauer, R., Extending Modules (Research Notes in Mathematics Series 313, Pitman, London, 1994).Google Scholar
9. Faith, C., When are proper cyclics injective? Pacific J. Math. 45 (1973), 97112.Google Scholar
10. Faith, C., On hereditary rings and Boyle's Conjecture, Arch. Math. 27 (1976), 113119.Google Scholar
11. Goodearl, K. R., Singular torsion and the splitting properties (Memoirs Amer. Math. Soc. 124, 1972).Google Scholar
12. Kosler, K., On hereditary rings and noetherian V-rings, Pacific J. Math. 103 (1982), 467473.Google Scholar
13. Lopez-Permouth, S. R. and Rizvi, S. T., On certain classes of QI-rings, in Methods in Module Theory (Lecture Notes Vol. 140, Marcel Dekker, 1993), 227235.Google Scholar
14. Mohamed, S. H. and Müller, B. J., Continuous and Discrete Modules (London Math. Soc. Lecture Notes 147, Cambridge Univ. Press, 1990).CrossRefGoogle Scholar
15. Rizvi, S. T., Commutative rings for which every continuous module is quasi-injective, Arch. Math. 50 (1988), 435442.Google Scholar
16. Wisbauer, R., Foundations of Module and Ring Theory (Gordon and Breach, Reading, 1991).Google Scholar