A CHARACTERIZATION OF LOW DEGREE POLYNOMIALS
Prasanna K. Sahoo, Michael S. Jacobson, Pl. Kannappan · Demonstratio Mathematica · 1995
This paper concerns with the solution of a functional equation that characterizes low degree polynomials.The method used for solving the equation is simple and elementary.Here, an answer is also provided to a problem posed by Walter Rudin in the American Mathematical Monthly [11] in a general setting.