Ein gruppentheoretisches Kriterium für die Lösbarkeit der Funktionalgleichung f(x + y) =F(f(x),f(y))
Équations fonctionnelles liées aux groupes linéaires commutatifs
Equivalence of 'Cube' and 'Octahedron' Functional Equations.
Existence and uniqueness of the analytic solution of a nonlinear functional equation. (Russisch).
Existence of differentiable solutions of a system of functional equations of first order
Existence of solutions of impulsive boundary value problems for singular fractional differential systems
A class of impulsive boundary value problems of fractional differential systems is studied. Banach spaces are constructed and nonlinear operators defined on these Banach spaces. Sufficient conditions are given for the existence of solutions of this class of impulsive boundary value problems for singular fractional differential systems in which odd homeomorphism operators (Definition 2.6) are involved. Main results are Theorem 4.1 and Corollary 4.2. The analysis relies on a well known fixed point...
Exponential-cosine operator-valued functional equation in the strong operator topology.
Extension of the Riesz Representation Theorem and Solution of the Maxwell-Boltzmann Functional Equation. (Short Communication).
Extension of the Riesz Representation Theorem and Solution of the Maxwell Functional Equation.