Volume 2, Issue 2, August 2018, Pages: 29-40
Hajira Dimou, Muaadh Almahalebi and Abdellatif Chahbi
Department of Mathematics, Faculty of Sciences, Ibn Tofail University, Kenitra, Morocco
In the present paper, we characterize, in terms of multiplicative characters and additive functions, the continuous solutions of some functional equations for mapping defined on a group and taking valued in a complex Hilbert space with the Hadamard product.
D’Alembert’s functional equation, involutive automorphism, functional equation, Hilbert valued function, Hadamard product.
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