A verbal subgroup of a group $G$, generated by the set of words $A \subset F_\infty$ ($F_\infty$ is a free group of countable rank) is a subgroup $V_A(G) = \langle {h(w): w \in A, h \text{ is a homomorphism from } F_\infty \text{ to }G } \rangle$. A verbal subgroup is always a characteristic one. To be used with the tag [group-theory].
Questions tagged [verbal-subgroups]
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