Modules which are epi-equivalent to projective modules
Gary Birkenmeier (1983)
Acta Universitatis Carolinae. Mathematica et Physica
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Gary Birkenmeier (1983)
Acta Universitatis Carolinae. Mathematica et Physica
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Zhou, Dexu, Gong, Zhiwei (2010)
International Journal of Mathematics and Mathematical Sciences
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Patrick. F. Smith, Dinh Van Huynh (1990)
Banach Center Publications
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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.
K.R. Fuller, M. Saorín (1992)
Manuscripta mathematica
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S. Balcerzyk (1971)
Colloquium Mathematicae
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A. KOEHLER (1970)
Mathematische Annalen
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Roger Yue Chi Ming (1987)
Archivum Mathematicum
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Jan Trlifaj (1985)
Czechoslovak Mathematical Journal
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