A functional equation involving f and .
A simple functional operator.
A synthesis of multidimensional judgements consistent with linear transformations.
An extension theorem.
Analytic roots of invertible matrix functions.
Der Hauptsatz über Iteration im Ring der formalen Potenzreihen.
Equations of the form H(x...y) = ...fi(x)gi(y).
Functional homomorphisms and dynamical systems.
General theory of the translation equation.
Hyers-Ulam stability of the generalized trigonometric formulas.
L...-Convergence of Collocation and Galerkin Approximations to Linear Two-point Parabolic Systems.
Linearisierung formal-biholomorpher Abbildungen und Interationsprobleme.
Matrix refinement equations: Continuity and smoothness
In this paper we give some criteria for the existence of compactly supported -solutions ( is an integer and ) of matrix refinement equations. Several examples are presented to illustrate the general theory.
Matrix Refinement Equations: Existence and Uniqueness.
Matrix solutions of the functional equation of the gamma function.
Mots infinis et produits de matrices a coefficients polynomiaux
Multiple integrals evaluated by functional equations
Non-trivial solutions to certain matrix equations.
On a functional equation of Aczél and Chung.
On a general Hyers-Ulam stability result.