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Pinsker, A.G. (1938) Sur une fonctionnelle dans l’espace de Hilbert. Comptes Rendus (Dokl.) de l’Académie des Sciences, URSS, 20, 411-414.

has been cited by the following article:

• TITLE: Orthogonal Stability of Mixed Additive-Quadratic Jensen Type Functional Equation in Multi-Banach Spaces

  AUTHORS: Xiuzhong Yang, Lidan Chang, Guofen Liu

  KEYWORDS: Hyers-Ulam Stability, Additive-Quadratic Jensen Type Functional Equation, Multi-Banach Spaces, Fixed Point Method

  JOURNAL NAME: Advances in Pure Mathematics, Vol.5 No.6, May 5, 2015

  ABSTRACT: In this paper, we prove the Hyers-Ulam stability of the following mixed additive-quadratic Jensen type functional equation: