Prof. Svetlin G. Georgiev is a mathematician with a broad range of interests who serves as Professor of Mathematics at Sorbonne University in Paris, France. He has also taught as a Professor of Mathematics and Informatics at Sofia University, St. Kliment Ohridski, Sofia, Bulgaria. Currently, he focuses on ordinary and partial differential equations, harmonic analysis, integral equations, Clifford and quaternion analysis, time scales calculus, and differential and dynamic geometry.Dr. Sanket Tikare is an Assistant Professor in the Department of Mathematics at Ramniranjan Jhunjhunwala College, Mumbai, India. He did his M.Sc. and Ph.D. in Mathematics, both from Shivaji University, Kolhapur, Maharashtra, India. He specializes in Applied Analysis, and his research areas of interest includes differential equations, difference equations, dynamic equations on time scales, impulsive systems, and equations with delays. He has published several research papers (SCOPUS/SCIE) related to the above areas and has collaborated with several eminent researchers from various institutes. He is a life member of the India Mathematical Society and a life member of the International Society of Difference Equations.