Generalized projectivity. II.
Josef Jirásko (1979)
Commentationes Mathematicae Universitatis Carolinae
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Josef Jirásko (1979)
Commentationes Mathematicae Universitatis Carolinae
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Weimin Xue (1996)
Publicacions Matemàtiques
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We characterize semiperfect modules, semiperfect rings, and perfect rings using locally projective covers and generalized locally projective covers, where locally projective modules were introduced by Zimmermann-Huisgen and generalized locally projective covers are adapted from Azumaya’s generalized projective covers.
Ladislav Bican, Josef Jirásko (1984)
Czechoslovak Mathematical Journal
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Gary Birkenmeier (1983)
Acta Universitatis Carolinae. Mathematica et Physica
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Al-Thani, Huda Mohammed J. (2002)
International Journal of Mathematics and Mathematical Sciences
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Sheila Brenner (1998)
Colloquium Mathematicae
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