Article ID Journal Published Year Pages File Type
4618045 Journal of Mathematical Analysis and Applications 2012 6 Pages PDF
Abstract

We define a ρ-orthogonality in a real normed space and we consider the class of linear mappings preserving this relation. We show that a linear mapping preserving ρ-orthogonality has to be a similarity, i.e., a scalar multiple of an isometry. As a result, we give a characterization of smooth spaces in terms of this orthogonality.

Related Topics
Physical Sciences and Engineering Mathematics Analysis