| Preface | p. vii |
| Linear Complex Vector Functional Equations | p. 1 |
| General Classes of Cyclic Functional Equations | p. 3 |
| Basic Cyclic Functional Equation | p. 3 |
| Derived Cyclic Functional Equation | p. 6 |
| Paracyclic Functional Equation | p. 29 |
| Semicyclic Functional Equation | p. 65 |
| Special Cyclic Functional Equation | p. 69 |
| Condensed Cyclic Functional Equation | p. 72 |
| Functional Equations with Operations between Arguments | p. 75 |
| Operator Functional Equation | p. 75 |
| Generalized Functional Equation | p. 81 |
| Simple Functional Equations | p. 94 |
| Functional Equations with Several Unknown Functions | p. 99 |
| Frechet's Functional Equations | p. 106 |
| Functional Equations with Two Operations | p. 111 |
| Functional Equations with Constant Parameters | p. 121 |
| General Parametric Functional Equation | p. 121 |
| Special Parametric Functional Equation | p. 135 |
| Expanded Parametric Functional Equation | p. 142 |
| General Expanded Parametric Functional Equation | p. 161 |
| Functional Equations with Constant Coefficients | p. 173 |
| Matrix Equations | p. 173 |
| Homogeneous Functional Equations with Constant Coefficients | p. 175 |
| Nonhomogeneous Functional Equations with Constant Coefficients | p. 190 |
| Paracyclic Functional Equations with Constant Coefficients | p. 197 |
| Systems of Linear Functional Equations | p. 205 |
| Systems in Which Each Equation Contains All Unknown Functions | p. 205 |
| Systems in Which Not All Equations Contain All Unknown Functions | p. 214 |
| Nonlinear Complex Vector Functional Equations | p. 217 |
| Quadratic Functional Equations | p. 219 |
| Simple Quadratic Functional Equation | p. 219 |
| Special Quadratic Functional Equation | p. 227 |
| Modified Quadratic Functional Equations | p. 231 |
| Basic Quadratic Functional Equation | p. 231 |
| Permuted Quadratic Functional Equation | p. 234 |
| First Modified Quadratic Functional Equation | p. 238 |
| Second Modified Quadratic Functional Equation | p. 241 |
| Third Modified Quadratic Functional Equation | p. 244 |
| Expanded Quadratic Functional Equations | p. 247 |
| Expanded Quadratic Functional Equations with Functional Arguments | p. 247 |
| Expanded Quadratic Functional Equations with the Same Signs between the Functions | p. 251 |
| Expanded Quadratic Functional Equation with Alternating Signs between the Functions | p. 259 |
| Generalized Quadratic Functional Equation | p. 262 |
| Higher Order Functional Equations | p. 265 |
| Higher Order Functional Equation without Parameters | p. 265 |
| Higher Order Functional Equation with Complex Parameters | p. 267 |
| Nonlinear Operator Functional Equation | p. 273 |
| Systems of Nonlinear Functional Equations | p. 285 |
| Systems of Quadratic Functional Equations | p. 285 |
| Systems of Higher Order Functional Equations | p. 311 |
| Bibliography | p. 319 |
| Index | p. 323 |
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