**About the Editors**

**Nicusor Minculete** (Ph.D.) has been an associate professor at the Department of Mathematics and Computer Science of Transylvania, University of Bras, ov, Romania, since 2013. His research interests include number theory, Euclidean geometry, inequality, operators, and entropy. He is the author of more than 30 articles, most of which are published in international ISI journals.

**Shigeru Furuichi** (Ph.D.) received his B.S. degree from Department of Mathematics, Tokyo University of Science, and M.S. and Ph.D. from Department of information Science, Tokyo University of Science, Japan. He was an Assistant Professor and Lecturer from 1997 to 2007 in the Department of Electronics and Computer Science, Tokyo University of Science, Yamaguchi, Japan. He was an Associate Professor from 2008 to 2012 and has been Professor since 2013 in the Department of Information Science, College of Humanities and Sciences, Nihon University. His research interests include inequality, matrices/operators, and entropy. He is the author of more than 150 articles, most of which are published in international ISI journals.
