On three problems from the Scottish Book connected with orthogonal systems

DOI10.4064/cm-70-2-227-234zbMath0867.46009OpenAlexW941338025MaRDI QIDQ4886353

Anatolij M. Plichko, A. Razenkov

Publication date: 10 August 1997

Published in: Colloquium Mathematicum (Search for Journal in Brave)

Full work available at URL: https://eudml.org/doc/210408

zbMATH Keywords

conditional basisorthogonal system\(T\)-basisnon-strong \(M\)-basis

Mathematics Subject Classification ID

Hilbert and pre-Hilbert spaces: geometry and topology (including spaces with semidefinite inner product) (46C05) Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis (42C05) Summability and bases; functional analytic aspects of frames in Banach and Hilbert spaces (46B15)

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On quasicomplemented Hilbertian subspaces of Banach spaces

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