About isolators of finitely generated subgroups of free groups
It is known that in any free group the isolator of finitely generated subgroup is finitely generated subgroup. A very simple proof of this statement is proposed.
math.GR↗
arXiv subjects
David Moldavanskii
Publications and source records attributed to David Moldavanskii.
On some residual properties of Baumslag -- Solitar groups
A survey of results on the residual properties of Baumslag -- Solitar groups which have been obtained to date.
math.GR↗
On the finitely separability of subgroups of generalized free products
It is proved that all finitely generated subgroups of generalized free product of two groups are finitely separable provided that free factors have this property and amalgamated subgroups are normal in corresponding factors and satisfy the maximum condition for subgroups.
math.GR↗