Department of Mathematics;
Fairfield University;
Fairfield;
CT;
USA;
Department of Mathematics;
United States Naval Academy;
Annapolis;
MD;
USA;
Fachbereich Mathematik;
University of Hamburg;
Hamburg;
Germany;
Department of Statistics;
Temple University;
Philadelphia;
PA;
USA;
Group; Ring; Elementary; Equivalent; Universally; Equivalent; Direct; Union; Discriminates;