General Solutions of Two Quadratic Functional Equations of Pexider Type on Orthogonal Vectors

Based on the studies on the Hyers-Ulam stability and the orthogonal stability of some Pexider-quadratic functional equations, in this paper we find the general solutions of two quadratic functional equations of Pexider type. Both equations are studied in restricted domains: the first equation is stu...

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Main Author: Margherita Fochi
Format: Article
Language:English
Published: Wiley 2012-01-01
Series:Abstract and Applied Analysis
Online Access:http://dx.doi.org/10.1155/2012/675810
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author Margherita Fochi
author_facet Margherita Fochi
author_sort Margherita Fochi
collection DOAJ
description Based on the studies on the Hyers-Ulam stability and the orthogonal stability of some Pexider-quadratic functional equations, in this paper we find the general solutions of two quadratic functional equations of Pexider type. Both equations are studied in restricted domains: the first equation is studied on the restricted domain of the orthogonal vectors in the sense of Rätz, and the second equation is considered on the orthogonal vectors in the inner product spaces with the usual orthogonality.
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spelling doaj-art-6cb391f03682457c95c8f91f2d9c05e42025-08-20T02:06:44ZengWileyAbstract and Applied Analysis1085-33751687-04092012-01-01201210.1155/2012/675810675810General Solutions of Two Quadratic Functional Equations of Pexider Type on Orthogonal VectorsMargherita Fochi0Dipartimento di Matematica, Università di Torino, Via Carlo Alberto 10, 10123 Torino, ItalyBased on the studies on the Hyers-Ulam stability and the orthogonal stability of some Pexider-quadratic functional equations, in this paper we find the general solutions of two quadratic functional equations of Pexider type. Both equations are studied in restricted domains: the first equation is studied on the restricted domain of the orthogonal vectors in the sense of Rätz, and the second equation is considered on the orthogonal vectors in the inner product spaces with the usual orthogonality.http://dx.doi.org/10.1155/2012/675810
spellingShingle Margherita Fochi
General Solutions of Two Quadratic Functional Equations of Pexider Type on Orthogonal Vectors
Abstract and Applied Analysis
title General Solutions of Two Quadratic Functional Equations of Pexider Type on Orthogonal Vectors
title_full General Solutions of Two Quadratic Functional Equations of Pexider Type on Orthogonal Vectors
title_fullStr General Solutions of Two Quadratic Functional Equations of Pexider Type on Orthogonal Vectors
title_full_unstemmed General Solutions of Two Quadratic Functional Equations of Pexider Type on Orthogonal Vectors
title_short General Solutions of Two Quadratic Functional Equations of Pexider Type on Orthogonal Vectors
title_sort general solutions of two quadratic functional equations of pexider type on orthogonal vectors
url http://dx.doi.org/10.1155/2012/675810
work_keys_str_mv AT margheritafochi generalsolutionsoftwoquadraticfunctionalequationsofpexidertypeonorthogonalvectors