Numerous detailed proofs highlight this treatment of functional equations. Starting with equations that can be solved by simple substitutions, the book then mov
Many books have been written on the theory of functional equations, but very few help readers solve functional equations in mathematics competitions and mathema
Functional Equations and Inequalities with Applications presents a comprehensive, nearly encyclopedic, study of the classical topic of functional equations. Thi
The notion of stability of functional equations of several variables in the sense used here had its origins more than half a century ago when S. Ulam posed the