Bulletin of the
Korean Mathematical Society
BKMS

ISSN(Print) 1015-8634 ISSN(Online) 2234-3016

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Bull. Korean Math. Soc. 2002; 39(3): 401-410

Printed September 1, 2002

Copyright © The Korean Mathematical Society.

Generalized Jensen's functional equations and approximate algebra homomorphisms

Jae-Hyeong Bae and Won-Gil Park

Chungnam National University, Chungnam National University

Abstract

We prove the generalized Hyers-Ulam-Rassias stability of generalized Jensen's functional equations in Banach modules over a unital $C^*$-algebra. It is applied to show the stability of algebra homomorphisms between Banach algebras associated with generalized Jensen's functional equations in Banach algebras.

Keywords: stability, Jensen's functional equation, Banach module over $C^*$-algebra, approximate algebra homomorphism

MSC numbers: 39B82, 46L05, 47B48