On the existence of projective and quasi-projective covers
Jutta Hausen, Johnny A. Johnson (1985)
Rendiconti del Seminario Matematico della Università di Padova
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Displaying similar documents to “Quasi-projective abelian groups”
On the existence of projective and quasi-projective covers
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An exact sequence of torsion-free abelian groups is quasi-balanced if the induced sequence is exact for all rank-1 torsion-free abelian groups . This paper sets forth the basic theory of quasi-balanced sequences, with particular attention given to the case in which is a Butler group. The special case where is almost completely decomposable gives rise to a descending chain of classes of Butler groups. This chain is a generalization of the chain of Kravchenko classes that arise...
Quasi-essential subsocles of Abelian p-groups
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