Hyers–Ulam Stability Results for a Functional Inequality of (s, t)‐Type in Banach Spaces

R Suparatulatorn, T Chaobankoh - Journal of Function Spaces, 2022 - Wiley Online Library
Hyers–Ulam Stability Results for a Functional Inequality of (s, t)‐Type in Banach Spaces -
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Stability of an (A, Q)-functional equation in a Banach space.

C Park, J Senasukh - Asian-European Journal of …, 2023 - search.ebscohost.com
In this paper, we study an (A, Q)-functional equation f (x+ y, z+ w)+ f (x+ y, z− w)+ f (x− y, z+
w)+ f (x− y, z− w)= 4 f (x, z)+ 4 f (x, w) in a Banach space and determine its general solutions …