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On the Brzdȩk’s fixed point approach to stability of a Drygas functional equation in 2-Banach spaces
Journal of Fixed Point Theory and Applications ( IF 1.8 ) Pub Date : 2021-03-01 , DOI: 10.1007/s11784-021-00856-2 Ahmed Nuino
中文翻译:
关于2 Banach空间中Drygas函数方程的稳定性的Brzdȩk不动点方法
更新日期:2021-03-02
Journal of Fixed Point Theory and Applications ( IF 1.8 ) Pub Date : 2021-03-01 , DOI: 10.1007/s11784-021-00856-2 Ahmed Nuino
Using the Brzḑek’s fixed point approach, we will prove the generalized Hyers–Ulam–Rassias stability for the following Drygas functional equation in 2-Banach spaces
$$\begin{aligned} f(x+y)+f(x-y)=2f(x)+f(y)+f(-y). \end{aligned}$$Moreover, we investigate some hyperstability results for this equation.
中文翻译:
关于2 Banach空间中Drygas函数方程的稳定性的Brzdȩk不动点方法
使用Brzḑek的不动点方法,我们将证明2-Banach空间中以下Drygas功能方程的广义Hyers-Ulam-Rassias稳定性
$$ \ begin {aligned} f(x + y)+ f(xy)= 2f(x)+ f(y)+ f(-y)。\ end {aligned} $$此外,我们研究了该方程的一些超稳定性结果。