A note on -cofinitely supplemented modules.
Wang, Yongduo, Sun, Qing (2007)
International Journal of Mathematics and Mathematical Sciences
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Wang, Yongduo, Sun, Qing (2007)
International Journal of Mathematics and Mathematical Sciences
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Robert Wisbauer (1985)
Acta Universitatis Carolinae. Mathematica et Physica
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Ladislav Bican, Pavel Jambor, Tomáš Kepka, Petr Němec (1979)
Mathematica Slovaca
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Wang, Yongduo (2007)
International Journal of Mathematics and Mathematical Sciences
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Sangwon Park, Eunha Cho (2004)
Czechoslovak Mathematical Journal
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We study whether the projective and injective properties of left -modules can be implied to the special kind of left -modules, especially to the case of inverse polynomial modules and Laurent polynomial modules.
Goro Azumaya (1992)
Publicacions Matemàtiques
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We first prove that every countably presented module is a pure epimorphic image of a countably generated pure-projective module, and by using this we prove that if every countably generated pure-projective module is pure-injective then every module is pure-injective, while if in any countably generated pure-projective module every countably generated pure-projective pure submodule is a direct summand then every module is pure-projective.