On Kreĭn's extension theory of nonnegative operators

DOI10.1002/mana.200310202zbMath1076.47008OpenAlexW2030941695MaRDI QIDQ4651911

Hassi, Seppo, Hendrik S. V. de Snoo, Mark M. Malamud

Publication date: 23 February 2005

Published in: Mathematische Nachrichten (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1002/mana.200310202

zbMATH Keywords

completionshorted operatorgeneralized Schur complementnonnegative selfadjoint extensionFriedrichs and Kreĭn-von Neumann extensionselfadjoint contractive extension

Mathematics Subject Classification ID

Perturbation theory of linear operators (47A55) 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)

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