Abstract
We consider the Birkhoff-James orthogonality in normed spaces and classes of linear mappings exactly and approximately preserving this relation. Some related stability problems are posed.
Citation
Jacek Chmielinski. "Remarks on orthogonality preserving mappings in normed spaces and some stability problems." Banach J. Math. Anal. 1 (1) 117 - 124, 2007. https://doi.org/10.15352/bjma/1240321561
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