Title of article
Characterization of quadratic mappings through a functional inequality
Author/Authors
W?odzimierz Fechner، نويسنده ,
Issue Information
دوهفته نامه با شماره پیاپی سال 2006
Pages
8
From page
452
To page
459
Abstract
We provide conditions under which every solution (f,φ) of the functional inequality
f (x +y) −
f (2x) +f (2y)
4 φ(x, y)
satisfies f (x) = 12
φ(x, x) and φ being biadditive and symmetric.
© 2005 Elsevier Inc. All rights reserved.
Keywords
Functional inequality , Quadratic and biadditive functionals
Journal title
Journal of Mathematical Analysis and Applications
Serial Year
2006
Journal title
Journal of Mathematical Analysis and Applications
Record number
935006
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