A New Fixed Point Theorem and a New Generalized Hyers-Ulam-Rassias Stability in Incomplete Normed Spaces

In this study, our goal is to apply a new fixed point method to prove the Hyers-Ulam-Rassias stability of a quadratic functional equation in normed spaces which are not necessarily Banach spaces. The results of the present paper improve and extend some previous results.

Bibliographic Details

Published in:	Mathematics
Main Authors:	Maryam Ramezani, Ozgur Ege, Manuel De la Sen
Format:	Article
Language:	English
Published:	MDPI AG 2019-11-01
Subjects:	orthogonal set hyers-ulam-rassias stability quadratic equation fixed point incomplete metric space
Online Access:	https://www.mdpi.com/2227-7390/7/11/1117