“School of Mathematics”
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| Paper IPM / M / 15699 |
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| Abstract: | |
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This paper studies similarities and differences between the classes of rings over which each simple module is injective and rings over which each simple module is Σ-injective. The rings in the former class are called V-rings and the rings in the latter class are called Σ-V rings. We point out some inaccuracies in the literature on V -rings and raise some questions.
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