Ravi P. Agarwal is a Professor at the Texas A&M University in Kingsville, USA. He is also a Distinguished University Professor of Mathematics at the Florida Institute of Technology, Melbourne, FL, USA. He did his PhD at the Indian Institute of Technology, India. Dr. Agarwal authored, co-authored and co-edited over 60 books, including “An Introduction to Ordinary Differential Equations” (978-0-387-71275-8) and “Ordinary and Partial Differential Equations” (978-0-387-79145-6), both co-authored by Donal O’Regan and published by Springer.