Ravi P. Agarwal is an Emeritus Professor at the Florida Institute of Technology, USA. Previously, he served as a Professor at Texas A&M University in Kingsville, USA, for many years. He completed his Ph.D. (1973) at the Indian Institute of Technology, India. Dr. Agarwal has authored or co-authored 50 books (mostly with Springer) and 2,000 research articles. His research interests include nonlinear analysis, differential and difference equations, fixed point theory, and general inequalities.