Orthogonal stability of a quadratic functional inequality: a fixed point approach

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Keywords:

Hyers-Ulam stability; quadratic functional equation; fixed point method; quadratic functional inequality; orthogonality space

Abstract

Let f : X → Y be a mapping from an orthogonality space (X , ⊥) into a real Banach space (Y, k · k). Using fixed point method, we prove the Hyers-Ulam stability of the orthogonally quadratic functional inequality mceclip0-19dc3a20f7393829fd684b6a75fcdc39.pngfor all x, y, z ∈ X with x⊥y, x⊥z and y⊥z

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Published

2021-01-19

How to Cite

Shahrokh Farhadabadi, & Choonkil Park. (2021). Orthogonal stability of a quadratic functional inequality: a fixed point approach. Journal of Computational Analysis and Applications (JoCAAA), 29(1), 140–150. Retrieved from http://eudoxuspress.com/index.php/pub/article/view/138

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