Omar Ajebbar

collaborators

3 papers

math.GM2019

Variants of Wilson's functional equation on semigroups

Omar Ajebbar, Elhoucien Elqorachi

Given a semigroup $S$ generated by its squares equipped with an involutive automorphism $σ$ and a multiplicative function $μ : S \to C$ such that $μ (x σ (x)) = 1$ for all $x \in S$ …

math.GM2019

A generalization of d'Alembert's functional equation on semigroups

Omar Ajebbar, Elhoucien Elqorachi

Given a semigroup $S$ generated by its squares equipped with an involutive automorphism $σ$ and a multiplicative function $μ : S \to C$ such that $μ (x σ (x)) = 1$ for all $x \in S$ …

math.CA2019

Extensions of the Cosine-Sine functional equation

Omar Ajebbar, Elhoucien Elqorachi

The aim of the present paper is to give extensions of the cosine-sine functional equation.