Ulam-Hyers Stability of Trigonometric Functional Equation with Involution

Let S and G be a commutative semigroup and a commutative group, respectively, C and R+ the sets of complex numbers and nonnegative real numbers, respectively, and σ:S→S or σ:G→G an involution. In this paper, we first investigate general solutions of the functional equation f(x+σy)=f(x)g(y)-g(x)f(y)...

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Bibliographic Details
Main Authors: Jaeyoung Chung, Chang-Kwon Choi, Jongjin Kim
Format: Article
Language:English
Published: Wiley 2015-01-01
Series:Journal of Function Spaces
Online Access:http://dx.doi.org/10.1155/2015/742648
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