scientific article; zbMATH DE number 1244293

zbMath0909.39010MaRDI QIDQ4226245

Jacek Chmieliński, Juerg Raetz

Publication date: 24 January 1999

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

inner product spacesorthogonality equationCauchy functional equationinner product preserving mappingsfunctional equation on restricted domain

Mathematics Subject Classification ID

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)

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On almost everywhere \(K\)-additive set-valued maps ⋮ Orthogonalities and functional equations

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