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1. INTRODUCTION Professor Themistocles M. Rassias has made fundamental contributions in mathematical analysis, geometry, topology and their applications. His works are known in the field of mathematical analysis with the terms "Hyers-Ulam-Rassias stability" (first appeared in [ll]) or "Cauchy-Rassias stability" (first appeared in [23, 32]) and in geometry with the term "Aleksandrov-Rassias problem" (first appeared in ). He has lectured extensively and conducted research in various academic institutions in Europe and North America. He published more than 200 papers, wrote six research books and edited 24 volumes on different subjects in mathematics with many citations to them (see , 7, 15, 20, 2(i, 4K]) and also his selected publications. He has served as a member of the Editorial Board of more than 40 journals published in Europe, USA and Asia, which gives him a global view of the current research. He is Professor at the National Technical University of Athens, Greece.