This research monograph offers a general theory which encompasses almost all known general theories in such a way that many practical applications can be obtained. It will be useful for mathematicians interested in the development of the abstract Control Theory with applications to Nonlinear PDE, as well as physicists, engineers, and economists looking for theoretical guidance in solving their optimal control problems; and graduate-level seminar courses in nonlinear applied functional analysis.Contents:A Maximal Element Principle for Constraint SetsOptimization and Optimal Control of Nonlinear Evolution Equation Via GLIM-IOptimization and Optimal Control of Nonlinear Evolution Equations Via GLIM-IIOptimization and Optimal Control of Nonlinear Evolution Equations Via GLIM-IIISmoothing Operators Without Elliptic Regularization for Nonlinear Evolution EquationsOptimization and Optimal Control of Nonlinear Singular Equations Via GLIM-IOptimization and Optimal Control of Nonlinear Singular Equations Via GLIM-IIOptimization and Optimal Control Nonlinear Singular Equations Via GLIM-IIISmoothing Operators without Elliptic Regularization for Nonlinear EquationsAn Extremum Principle for Optimal Control of Nonlinear Singular Equations and Smooth-Convex ProblemsApplicationsOptimization and Optimal Control of Nonlinear Evolution and Singular Equations in Arbitrary Banach SpacesA Direct Approach to Optimal Control with Mixed ConstraintsReadership: Mathematicians, physicists and engineers.Key Features:An examination of childhood as it was and is being experienced in SingaporeExtensive research but presented in an easy-to-read mannerRich pictorial resource of photographs and illustrations comparing then and now of childhood in Singapore