Kovacs, LGruenberg, K2015-12-132015-12-130004-9727http://hdl.handle.net/1885/94926Let G be a finite group, F a free group of finite rank, R the kernel of a homomorphism φ of F onto G, and let [R, F], [R, R] denote mutual commutator subgroups. Conjugation in F yields a G-module structure on R/[R, R]; let dG(R/[R, R]) be the number of e19992015-12-12