Pyskun M. Generalized normal subgroups and their influence on a structure of a group

This dissertation contains the description of the groups, having an ascending series of normal subgroups with locally nilpotent or locally finite factors, in which a family of non nearly normal subgroups has a Krull dimension; the description of the groups, having an ascending series of normal subgroups with locally nilpotent or locally finite factors, in which a family of non almost normal subgroups has a Krull dimension; the description of the groups, having an ascending series of normal subgroups with locally nilpotent or locally finite factors, in which a family of non normal subgroups has a Krull dimension; the description of the groups, having an ascending series of normal subgroups with locally nilpotent or locally finite factors, in which a every non polycyclic - by - finite subgroup is almost polycyclic approximate to normal.