Groups whose proper quotients are hypercentral

L. A. Kurdachenko
Algebra Department
Dnepropetrovsk University
Provulok Naukovyi 13
320625 Ukraine
e-mail: mmf@ff.dsu.dp.ua
and
I. Y. Subbotin
Mathematics Department
National University
9920 S.La Cienega Blvd
Inglewood , CA 90301, USA
e-mail: isubboti@nunic.nu.edu

Abstract:

Groups, all proper factor-groups of which are hypercentral of finite torsion-free rank, are studied in this article.