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arxiv: 0711.0947 · v1 · submitted 2007-11-06 · 🧮 math.RA

Rings whose modules are weakly supplemented are perfect

classification 🧮 math.RA
keywords leftonlyperfectr-modulesupplementedweaklycountablyevery
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In this note we show that a ring R is left perfect if and only if every left R-module is weakly supplemented if and only if R is semilocal and the radical of the countably infinite free left R-module has a weak supplement.

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