Form sums of nonnegative selfadjoint operators

DOI10.1007/s10474-006-0036-6zbMath1122.47011OpenAlexW3217646464MaRDI QIDQ858065

Adrian Sandovici, Hendrik S. V. de Snoo, Henrik Winkler, Hassi, Seppo

Publication date: 8 January 2007

Published in: Acta Mathematica Hungarica (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/s10474-006-0036-6

zbMATH Keywords

representation theoremFriedrichs extensionKreĭn-von Neumann extensionform sum extensionnonnegative selfadjoint relationsum of nonnegative selfadjoint operators

Mathematics Subject Classification ID

Linear symmetric and selfadjoint operators (unbounded) (47B25) Linear operator methods in interpolation, moment and extension problems (47A57) Positive linear operators and order-bounded operators (47B65) Linear relations (multivalued linear operators) (47A06) Forms (bilinear, sesquilinear, multilinear) (47A07)

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