A variant of the quadratic functional equation on semigroups.

• Autores: B. Fadli, D. Zeglami, S. Kabbaj
• Localización: Proyecciones: Journal of Mathematics, ISSN 0716-0917, ISSN-e 0717-6279, Vol. 37, Nº. 1, 2018, págs. 45-55
• Idioma: inglés
• DOI: 10.4067/s0716-09172018000100045
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• Resumen

  • Let S be a semigroup, let H be an abelian group which is uniquely 2-divisible, and let σ be an involutive automorphism of S. We express the solutions f : S → H of the following variant of the quadratic functional equation f(xy) + f(σ(y)x) = 2f(x) + 2f(y), x, y ∈ S, in terms of bi-additive maps and solutions of the symmetrized additive Cauchy equation.

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