Document Type : Original Article

Authors

• Karthikeyan Subramani ¹
• Choonkil Park ²
• John Michael Rassias ³

¹ Department of Mathematics R.M.K. Engineering College Kavarapettai

² Department of Mathematics, Hanyang University, Republic of Korea

³ Pedagogical Department E.E., Section of Mathematics and Informatics, National and Capodistrian University of Athens, 4, Agamemnonos Str. Aghia Paraskevi, Athens 15342, Greece.

Abstract

In this paper, we prove the Ulam-Hyers stability of the following quartic functional equation in paranormed spaces using both direct and fixed point methods.

Keywords

• paranormed space
• quartic functional equation
• Ulam-Hyers stability
• fixed point method