A fixed point approach to the stability of quintic and sextic functional equations in quasi--normed spaces.
A fixed point approach to the stability of the functional equation .
A fixed point approach to the stability of -morphisms on Hilbert -modules.
A functioanl identity characterizing polynomials.
A functional equation and its application to information theory
A functional equation arising from the Joukowski transformation
A functional equation arising in multi-agent statistical decision theory.
A functional equation characterizing cubic polynomials and its stability.
A functional equation characterizing monomial functions used in permanence theory for ecological differential equations.
A functional equation connected with the sine addition theorem
A functional equation for quadratic forms.
A functional equation involving f and .
A functional equation of Aczél and Chung in generalized functions.
A functional equation of Ih-Ching Hsu.
A functional equation originating from elliptic curves.
A functional equation related to an equality of means problem
The functional equation (F(x)-F(y))/(x-y) = (G(x)+G(y))(H(x)+H(y)) where F,G,H are unknown functions is considered. Some motivations, coming from the equality problem for means, are presented.
A Functional Equation with Differences
A functional inequality characterizing convex functions, conjugacy and a generalization of Hölder's and Minkowski's inequalities.
A Functional Inequality for Entire Functions Generalizing the Sine Functional Equation. (Short Communication).
A functional inequality for real-analytic functions.