Othman Echi received his M.Sc. in Mathematics (DEA) from the University of Tunis El Manar, Tunisia, in 1988, and his Doctorate of State in Mathematics from the same university in 1993. In 2001, he obtained his Habilitation à Diriger des Recherches (HDR) from Aix-Marseille III University, France. From 1997 to 1999, he served as Vice President of the Tunisian Mathematical Society. In 2001, he was appointed Full Professor of Mathematics at the University of Tunis El Manar. From 2010 to 2026, he served as Professor of Mathematical Sciences at King Fahd University of Petroleum and Minerals (KFUPM), Saudi Arabia. Professor Echi has been actively engaged in mathematical research and academic service throughout his career. He currently serves on the editorial board of the Arabian Journal of Mathematics. His research interests encompass commutative algebra, combinatorics, general topology, number theory, and theoretical computer science, with particular emphasis on interactions among these areas.