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On Weakly ω1-pω+n-projective Abelian p-groups


Affiliations
1 Department of Mathematics, Plovdiv University "P. Hilendarski", Plovdiv 4000, Bulgaria
     

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We define the class K of weakly ω1-pω+n-projectives which consists of abelian p-groups G such that there exists a countable nice subgroup N ⊆ pωG with G/(N + pω+nG) being pω+n-projective. It is shown that K properly contains the class of ω1-pω+n-projectives. More-over, some crucial properties of this new object K are also obtained.

Keywords

Abelian P-Groups, pω+n-projective Groups, Countable Sub-Groups, Nice Subgroups, ω1-pω+n-projective Groups, Ulm Subgroups, Ulm Factors.
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  • On Weakly ω1-pω+n-projective Abelian p-groups

Abstract Views: 298  |  PDF Views: 1

Authors

Peter V. Danchev
Department of Mathematics, Plovdiv University "P. Hilendarski", Plovdiv 4000, Bulgaria

Abstract


We define the class K of weakly ω1-pω+n-projectives which consists of abelian p-groups G such that there exists a countable nice subgroup N ⊆ pωG with G/(N + pω+nG) being pω+n-projective. It is shown that K properly contains the class of ω1-pω+n-projectives. More-over, some crucial properties of this new object K are also obtained.

Keywords


Abelian P-Groups, pω+n-projective Groups, Countable Sub-Groups, Nice Subgroups, ω1-pω+n-projective Groups, Ulm Subgroups, Ulm Factors.