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On m-ω1-pω+n - projective abelian p-groups

Danchev P.

Demonstratio Mathematica

2014

Vol. 47, nr 4

805--825

For any non-negative integers m and n, we define the classes of m-ω1-pω+n -projective groups and strongly m-ω1-pω+n -projective groups, which properly encompass the classes of ω1-pω+n -projectives introduced by Keef in J. Algebra Numb. Th. Acad. (2010) and strongly ω1-pω+n -projectives introduced by the present author in Hacettepe J. Math. Stat. (2014), respectively. The new group structures share many interesting properties, which are closely related to these of the aforementioned two own subclasses. Moreover, certain basic results in this direction are also established.