Najran University, Saudi Arabia
Dr. Kais Feki is an Assistant Professor of Mathematics at Najran University, Saudi Arabia, specializing in functional analysis, operator inequalities, and multivariable operator theory in Hilbert and semi-Hilbert spaces. He earned his Ph.D in Pure Mathematics from the University of Sfax in 2019 and has since published over 60 articles in high-impact ISI journals, including Linear Algebra and its Applications and one book chapters. His research collaborations include working with leading mathematicians such as Professors Silvestru Sever Dragomir and Fuad Kittaneh. He also serves as the Reviewer for journals and conferences, and is the member of the Topical Advisory Panel for Axioms (Q1) and Mathematics (Q1) Journals (Published by MDPI).