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An integral functional equation on groups under two measures.

  • Fadli, B. [1] ; Zeglami, D. [2] ; Kabbaj, S. [1]
    1. [1] Université Ibn-Tofail

      Université Ibn-Tofail

      Kenitra, Marruecos

    2. [2] Moulay Ismail University.
  • Localización: Proyecciones: Journal of Mathematics, ISSN 0716-0917, ISSN-e 0717-6279, Vol. 37, Nº. 3, 2018, págs. 565-581
  • Idioma: inglés
  • DOI: 10.4067/s0716-09172018000300565
  • Enlaces
  • Resumen
    • Let G be a locally compact Hausdorff group, let σ be a continuous involutive automorphism on G, and let µ, ν be regular, compactly supported, complex-valued Borel measures on G. We find the continuous solutions f : G → C of the functional equation in terms of continuous characters of G. This equation provides a common generalization of many functional equations (d’Alembert’s, Cauchy’s, Gajda’s, Kannappan’s, Stetkær’s, Van Vleck’s equations...). So, a large class of functional equations will be solved.

         

  • Referencias bibliográficas
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    • Fadli, B., Zeglami, D., Kabbaj, S.: A joint generalization of Van Vleck’s and Kannappan’s equations on groups. Adv. Pure Appl. Math. 6(3),...
    • Gajda, Z.: A generalization of d’Alembert’s functional equation, Funkcial. Ekvac. 33 (1), pp. 69-77, (1990).
    • Kannappan, PL.: A functional equation for the cosine. Can. Math. Bull. 11, pp. 495-498, (1968).
    • Kannappan, PL.: Functional equations and inequalities with applications. Springer, New York, (2009).
    • Perkins, A.M., Sahoo, P.K.: On two functional equations with involution on groups related to sine and cosine functions. Aequationes Math....
    • Stetkær, H.: Functional equations on groups. World Scientific, Publishing Co, Singapore, (2013).
    • Stetkær, H.: Van Vleck’s functional equation for the sine. Aequationes Math. 90 (1), pp. 25-34, (2016).
    • Stetkær, H.: Kannappan’s functional equation on semigroups with involution. Semigroup Forum. 94 (1), pp. 17-30, (2017).
    • Van Vleck, E.B.: A functional equation for the sine. Ann. Math. 7, pp. 161-165, (1910).

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