The centre of a finitely generated strongly verbally closed group is almost always pure
arXiv:2308.06837 · doi:10.1093/qmath/haae038
Abstract
The assertion in the title implies that many interesting groups (e.g., all non-abelian braid groups or ) are not strongly verbally closed, i.e., they embed into some finitely generated groups as verbally closed subgroups, which are not retracts.
6 pages. A Russian version of this paper is at http://halgebra.math.msu.su/staff/klyachko/papers.htm . V4: minor misprint corrections