It is shown, under ZFC, that a $B_2$-group has the interesting property of being $\aleph _0$-prebalanced in every torsion-free abelian group in which it is a pure subgroup. As a consequence, we obtain alternate proofs of some well-known theorems on $B_2$-groups.
@article{118704, author = {Kulumani M. Rangaswamy}, title = {A property of $B\_2$-groups}, journal = {Commentationes Mathematicae Universitatis Carolinae}, volume = {35}, year = {1994}, pages = {627-631}, zbl = {0823.20058}, mrnumber = {1321233}, language = {en}, url = {http://dml.mathdoc.fr/item/118704} }
Rangaswamy, Kulumani M. A property of $B_2$-groups. Commentationes Mathematicae Universitatis Carolinae, Tome 35 (1994) pp. 627-631. http://gdmltest.u-ga.fr/item/118704/
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