Iterative Pexider equation modulo a subset.
Jensen's functional equation on groups.
Jordan *-derivation pairs and quadratic functionals on modules over *-rings.
Jordan *-derivation pairs on a complex *-algebra.
Jordan *-derivation pairs on standard operator algebras and related results
Motivated by Problem 2 in [2], Jordan *-derivation pairs and n-Jordan *-mappings are studied. From the results on these mappings, an affirmative answer to Problem 2 in [2] is given when E = F in (1) or when 𝓐 is unital. For the general case, we prove that every Jordan *-derivation pair is automatically real-linear. Furthermore, a characterization of a non-normal prime *-ring under some mild assumptions and a representation theorem for quasi-quadratic functionals are provided.
Jordan homomorphisms in proper JCQ-triples.
Kurepa's functional equation on semigroups.
The functional equation to which the title refers is:F(x,y) + F(xy,z) = F(x,yz) + F(y,z),where x, y and z are in a commutative semigroup S and F: S x S --> X with (X,+) a divisible abelian group (Divisibility means that for any y belonging to X and natural number n there exists a (unique) solution x belonging to X to nx = y).
Le fonctions de Lévy existent!
L'équation de translation sur une structure avec zéro
Les relations entre les équations pré-Schröder I
Les relations entre les équations pré-Schröder II
Linearisierung formal-biholomorpher Abbildungen und Interationsprobleme.
Local stability of the additive functional equation and its applications.
Local stability of the functional equation characterizing polynomial functions
Lösung einer allgemeinen Funktionalgleichung mit fünf unbekannten Funktionen von verschiedenen Veränderlichenzahlen
Mappings preserving regular hexahedrons.
Matrix method for solving linear complex vector functional equations.
Mean-value type functional equations.
Measurability and Continuity for a Functional Equation on a Topological Group
Measurability and Continuity for a Functional Equation on a Topological Group (Short Communication)