The module of a 2-component link.
J. Levine (1982)
Commentarii mathematici Helvetici
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J. Levine (1982)
Commentarii mathematici Helvetici
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Zhou, Dexu, Gong, Zhiwei (2010)
International Journal of Mathematics and Mathematical Sciences
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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.
Wang, Yongduo (2007)
International Journal of Mathematics and Mathematical Sciences
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S. Balcerzyk (1971)
Colloquium Mathematicae
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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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Gary Birkenmeier (1983)
Acta Universitatis Carolinae. Mathematica et Physica
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