Publisher : Department of Mathematics, Kyungpook National University
DOI : 10.5666/KMJ.2010.50.4.557
Title & Authors
A Fixed Point Approach to the Stability of a Functional Equation Park, Won-Gil; Bae, Jae-Hyeong;
By using an idea of Cdariu and Radu , we prove the generalized Hyers-Ulam stability of the functional equation f(x + y,z - w) + f(x - y,z + w) = 2f(x, z) + 2f(y, w). The quadratic form given by f(x, y) = is a solution of the above functional equation.
Alternative of fixed point;Functional equation;Stability;
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