Abstract
The main result of the paper states that a metabelian group $G$ has deviation for normal subgroups if and only if it has a finite series of normal subgroups each of whose factor meets the maximal or the minimal condition for $G$-invariant subgroups.
Citation
A. V. Tushev. "On deviation in groups." Illinois J. Math. 47 (1-2) 539 - 550, Spring/Summer 2003. https://doi.org/10.1215/ijm/1258488171
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