Let $G$ be a free product of 2 groups with $G \neq Z_2*Z_2$ . i would like to know if the following assertion is correct :
Every almost nilpotent subgroup of G is contained in a unique maximal almost nilpotent subgroup .
Let $G$ be a free product of 2 groups with $G \neq Z_2*Z_2$ . i would like to know if the following assertion is correct :
Every almost nilpotent subgroup of G is contained in a unique maximal almost nilpotent subgroup .