Preface; Acknowledgements; Notations and Abbreviations; 1. Basic Definitions and Concepts from Metric Spaces; 2. Fixed Point Theory in Metric Spaces; 3. Set-valued Analysis: Continuity and Fixed Point Theory; 4. Variational Principles and their Applications; 5. Equilibrium Problems and Extended Ekeland's Variational Principle; 6. Some Applications of Fixed Point Theory; Appendix A. Some Basic Concepts and Inequalities; Appendix B. Partial Ordering; References; Index.