Lectures on functional equations and their applications

Front Cover; Lectures on Functional Equations and Their Applications; Copyright Page; Foreword to the German Edition; Foreword to the English Edition; Contents; Introduction; 0.1 Definition and Examples; 0.2 History; PART I: Equations for Functions of a Single Variable; CHAPTER 1. Equations Which Can Be Solved by Simple Substitutions; CHAPTER 2. Solution of Equations by Determining the Values of the Unknown Function on a Dense Set; CHAPTER 3. Equations with Several Unknown Functions; CHAPTER 4. Reduction to Differential and Integral Equations, General Methods.