Contents Chapter 1 Introduction 1.1 Examples of optimal control for elliptic systems 1.2 Examples of optimal control for evolution equations 1.3 Examples of optimal control for flow 1.4 Shape optimal control Chapter 2 Existence and Optimality Conditions of Optimal Control 2.1 Existence of optimal control 2.2 Optimality conditions of optimal control Chapter 3 Finite Element Approximation of Optimal Control 3.1 Finite element schemes for elliptic optimal control 3.2 Mixed finite element schemes for elliptic optimal control 3.3 Optimal control governed by Stokes equations 3.4 Finite element method for boundary control Chapter 4 A Priori Error Estimates for Optimal Control (I) 4.1 A priori error estimates for distributed elliptic control 4.2 A priori error estimates for elliptic boundary control 4.3 Superconvergence analysis for distributed elliptic control 4.4 Further developments on superconvergence Chapter 5 A Priori Error Estimates for Optimal Control (II) 5.1 A priori error estimates of mixed FEM for elliptic control 5.2 Superconvergence of mixed FEM for elliptic control 5.3 A priori error estimates for Stokes control 5.4 Superconvergence for Stokes control Chapter 6 Adaptivity Finite Element Method for Optimal Control 6.1 Adaptive finite element method for elliptic equations 6.2 Adaptive finite element method for optimal control Chapter 7 A Posteriori Error Estimates for Optimal Control 7.1 A posteriori error estimates for distributed control 7.2 A posteriori error estimates with lower and upper bounds 7.3 Sharp a posteriori error estimates for constraints of obstacle type 7.4 A posteriori error estimates in L2-norm 7.5 A posteriori error estimates for nonlinear control 7.6 A posteriori error estimates for boundary control Chapter 8 Numerical Computations of Optimal Control 8.1 Numerical solutions of optimal control 8.2 A preconditioned projection algorithm 8.3 Numerical Experiments 8.4 Appendix-L2-Projectors to some closed convex subsets Chapter 9 Recovery Based a Posteriori Error Estimators 9.1 Equivalence of a posteriori error estimators of recovery type 9.2 Asymptotical exactness of a posteriori error estimators of recovery type Chapter 10 Adaptive Mixed Finite Element Method for Optimal Control 10.1 A posteriori error estimates for elliptic control 10.2 A posteriori error estimates for Stokes control Bibliography