On the Norm of Linear Combinations of Projections and Some Characterizations of Hilbert Spaces

DOI10.1007/978-3-319-49182-0_20zbMath1472.47029OpenAlexW2603803233MaRDI QIDQ5269042

N. Ya. Krupnik, Alexander Markus

Publication date: 14 June 2017

Published in: Large Truncated Toeplitz Matrices, Toeplitz Operators, and Related Topics (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/978-3-319-49182-0_20

zbMATH Keywords

projectionscharacterizations of Hilbert spaceslinear combinations of two additional projections

Mathematics Subject Classification ID

Functions whose values are linear operators (operator- and matrix-valued functions, etc., including analytic and meromorphic ones) (47A56) Inner product spaces and their generalizations, Hilbert spaces (46C99) Linear operators in (C^*)- or von Neumann algebras (47C15)

This page was built for publication: On the Norm of Linear Combinations of Projections and Some Characterizations of Hilbert Spaces