Stability of a Bi-Additive Functional Equation in Banach Modules Over a C⋆-Algebra

Autor: Won-Gil Park, Jae-Hyeong Bae
Jazyk: angličtina
Rok vydání: 2012
Předmět:
Zdroj: Discrete Dynamics in Nature and Society, Vol 2012 (2012)
Druh dokumentu: article
ISSN: 1026-0226
1607-887X
DOI: 10.1155/2012/835893
Popis: We solve the bi-additive functional equation f(x+y,z−w)+f(x−y,z+w)=2f(x,z)−2f(y,w) and prove that every bi-additive Borel function is bilinear. And we investigate the stability of a bi-additive functional equation in Banach modules over a unital C⋆-algebra.
Databáze: Directory of Open Access Journals