The objectives of this monograph are to present some topics from the theory of monotone operators and nonlinear semigroup theory which are directly applicable to the existence and uniqueness theory of initialboundaryvalue problems for partial differential equations and to construct such operators as realizations of those problems in appropriate function spaces. A highlight of this presentation is the large number and variety of examples introduced to illustrate the connection between the theory of nonlinear operators and partial differential equations. These include primarily semilinear or quasilinear equations of elliptic or of parabolic type, degenerate cases with change of type, related systems and variational inequalities, and spatial boundary conditions of the usual Dirichlet, Neumann, Robin or dynamic type. The discussions of evolution equations include the usual initialvalue problems as well as periodic or more general nonlocal constraints, historyvalue problems, those which may change type due to a possibly vanishing coefficient of the time derivative, and other implicit evolution equations or systems including hysteresis models. The scalar conservation law and semilinear wave equations are briefly mentioned, and hyperbolic systems arising from vibrations of elasticplastic rods are developed. The origins of a representative sample of such problems are given in the appendix. Readership Advanced graduate students, research mathematicians, and engineers interested in numerical analysis, applied mathematics, control theory, or dynamical systems. Reviews "The book is extremely clear and well written, and so it is very readable. It contains a large variety of examples and applications and consequently it will prove quite useful not only to mathematicians, but also to engineers and physicists."  Mathematical Reviews "The completeness and the way of presentation makes the text understandable to anybody who can be interested in existence and uniqueness theory for initialboundaryvalue problems."  European Mathematical Society Newsletter Table of Contents  PDE examples by type
 Linear problems...An introduction
 Nonlinear stationary problems
 Nonlinear evolution problems
 Accretive operators and nonlinear Cauchy problems
 Appendix
 Bibliography
 Index
