Dikran Dikranjan is an Associate Professor in the Dipartimento di Matematica e Informatica, Università di Udine, Italy. He is the author or coauthor of over 90 research papers and books on topological groups, modules and rings, and category theory and its applications, including Topological Groups: Characters, Dualities, and Minimal Group Topologies (Marcel Dekker, Inc.). A member of the Italian Mathematical Union, Dr. Dikranjan received the Ph.D. degree (1978) in mathematics from Sofia University, Bulgaria. Luigi Salce is a Professor in the Dipartimento di Matematica Pura ed Applicata, Università di Padova, Italy. He is the author, coauthor, editor, or coeditor of over 50 papers and books on abelian groups and module theory, including Modules Over Valuation Domains (Marcel Dekker, Inc.). A member of the Italian Mathematical Union, Dr. Salce received the doctoral degree (1969) in mathematics from the Università di Padova, Italy.
