Abstract
We give several characterizations of semilocal rings and deduce that rationally closed subrings of semisimple artinian rings are semilocal, that artinian modules have semilocal endomorphism rings, and that artinian modules cancel from direct sums.
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Dedicated to the memory of Pere Menal
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Camps, R., Dicks, W. On semilocal rings. Israel J. Math. 81, 203–211 (1993). https://doi.org/10.1007/BF02761306
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DOI: https://doi.org/10.1007/BF02761306