Sur une équation fonctionnelle qui caractérise la fonction f(x) = x-1.
On a theorem of B. Barna. (Short Communication).
On a theorem of B. Barna.
On some alternative functional equations. (Short Communication).
Functional equations on restricted domains.
On some alternative functional equations.
Some Remarks About Additive Functions on Cones.
Some Remarks About Additive Functions on Cones. (Short Communication).
Some Remarks on the Functional Equation Characterizing the Root. (Short Communication).
On the quasiarithmetic mean in a mean value property and the associated functional equation.
On the quasiarithmetic mean in a mean value property and the associated functional equation.
Special solutions of a functional equation
Cauchy's functional equation on a restricted domain
Regular fractional iteration of convex functions
The existence of a unique solution φ of equation (1) is proved under the condition that f: I → I is convex or concave and of class in I, 0 < f(x) < x in I*, and f’(x) > 0 in I. Here I = [0, a] or [0, a), 0 < a ≤ ∞, and I* = I 0.
Quelques observations à propos de l'équation pré-Schröder
Analytic solutions of a linear functional equation
Almost convex functions
Non-negative continuous solutions of a functional inequality
On some properties of Erdös sets
On a certain series
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