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MATHEMATICS

On projective invariant subgroups of abelian groups

A. R. Chekhlov

Tomsk State University, Faculty of Mechanics and Mathematics

Abstract: There are chosen some types of projective invariant subgroups of abelian groups, which being fully invariant. The separable torsion-free groups in which all projective invariant subgroups are fully invariant are described.

Keywords: fully invariant subgroup, projective invariant subgroup.