Almost approximately inner product preserving mappings

DOI10.1007/S000100050121zbMath0961.39010OpenAlexW2047093526MaRDI QIDQ1577674

Jacek Chmieliński

Publication date: 11 May 2001

Published in: Aequationes Mathematicae (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/s000100050121

zbMATH Keywords

stabilityorthogonality equationapproximate solutions almost everywhereinner product preserving mappingsproper linearly invariant ideal

Mathematics Subject Classification ID

Variational and other types of inequalities involving nonlinear operators (general) (47J20) Hilbert and pre-Hilbert spaces: geometry and topology (including spaces with semidefinite inner product) (46C05) Functional equations for functions with more general domains and/or ranges (39B52) Functional inequalities, including subadditivity, convexity, etc. (39B62) Orthogonal additivity and other conditional functional equations (39B55)

Related Items (1)

Orthogonalities and functional equations

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