Marginal series in groups
J. A. Hulse, John C. Lennox · Proceedings of the Royal Society of Edinburgh Section A Mathematics · 1977
Synopsis We consider the generalisation from central series to marginal series in groups and set up firstly various basic results. The main section of the paper is concerned with the study of which group theoretical properties may be transferred from a marginal factor in a group to the corresponding verbal subgroup and which properties may be transferred from one factor of a lower marginal series to successive factors of the series.