Browsing Department of Mathematics by Subject "abelian groups"

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  • Variances of purity within torsion-free Abelian groups 

    Van Ster, Lynnette (University of the Western Cape, 1994)
    In 1921, Prufer introduced the concept of a pure subgroup of an abelian group. This concept, which is applicable only to abelian groups, proved to be a very useful one. Subsequently, this concept has sparked off numerous ...