The generalized criterion of Dieudonné for primary valuated groups
Peter Vassilev Danchev (2007)
Acta Mathematica Universitatis Ostraviensis
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Peter Vassilev Danchev (2007)
Acta Mathematica Universitatis Ostraviensis
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Danchev, P. (2005)
Acta Mathematica Universitatis Comenianae. New Series
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Peter Vassilev Danchev (2005)
Archivum Mathematicum
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Suppose is an abelian torsion group with a subgroup such that is countable that is, in other words, is a torsion countable abelian extension of . A problem of some group-theoretic interest is that of whether , a class of abelian groups, does imply that . The aim of the present paper is to settle the question for certain kinds of groups, thus extending a classical result due to Wallace (J. Algebra, 1981) proved when coincides with the class of all totally projective -groups. ...
Peter Vassilev Danchev, Patrick Keef (2008)
Archivum Mathematicum
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We prove that pure subgroups of thick Abelian -groups which are modulo countable are again thick. This generalizes a result due to Megibben (Michigan Math. J. 1966). Some related results are also established.
Danchev, P.V. (2008)
Acta Mathematica Universitatis Comenianae. New Series
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