On stability of the functional equation of p-Wright affine functions in (2,α)-Banach spaces

Author

1 Mathematics Department, College of Science, Jouf University, P.O. Box: 2014, Sakaka, Saudi Arabia

2 Basic Science Department, Faculty of Computers and Informatics, Suez Canal University, Ismailia 41522, Egyp

https://doi.org/10.1186/s42787-019-0024-y

Abstract

Stability of functional equations has recent applications in many fields. We show that
the stability results obtained by J. Brzd ˛ek and concerning the functional equation of the
p-Wright affine function:
f(px1 + (1 − p)x2) + f((1 − p)x1 + px2) = f(x1) + f(x2),
can be proved also in (2,α)-Banach spaces, for some real number α ∈ (0, 1). This is
done using some fixed-point theorem.

Keywords