On semiperfect modules

Canadian Mathematical Bulletin, 1975 - cambridge.org
Sandomierski (Proc. AMS 21 (1969), 205–207) has proved that a ring is semiperfect if and
only if every simple module has a projective cover. This is generalized to semiperfect …

[PDF][PDF] ON SEMIPERFECT MODULES

WK NICHOLSON - Canad. Math. Bull, 1975 - scholar.archive.org
Sandomierski (Proc. AMS 21 (1969), 205-207) has proved that a ring is semiperfect if and
only if every simple module has a projective cover. This is generalized to semiperfect …

[HTML][HTML] ON SEMIPERFECT MODULES

WK NICHOLSON - Canadian Mathematical Bulletin, 1975 - books.google.com
Sandomierski (Proc. AMS 21 (1969), 205-207) has proved that a ring is semiperfect if and
only if every simple module has a projective cover. This is generalized to semiperfect …