Canonical forms of unbounded unitary operators in Krein spaces

DOI10.2977/prims/1195175196zbMath0664.47027OpenAlexW2122165274MaRDI QIDQ1114915

Aurelian Gheondea

Publication date: 1988

Published in: Publications of the Research Institute for Mathematical Sciences, Kyoto University (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.2977/prims/1195175196

zbMATH Keywords

angular operatorHilbert-space unitary operatorsKrein-space unitary operatormaximal positive subspaceunbounded J-unitary operator

Mathematics Subject Classification ID

Linear operators on spaces with an indefinite metric (47B50)

Related Items (8)

On projections in a space with an indefinite metric ⋮ Symmetric and Isometric Relations ⋮ Discrete analytic functions, structured matrices and a new family of moment problems ⋮ Unbounded symmetrizable idempotents ⋮ An extension theorem for a sequence of Krein space contractions ⋮ Angular operators of nondegenerate subspaces ⋮ On the K-theoretic classification of dynamically stable systems ⋮ Joint similarity and dilations for noncontractive sequences of operators.

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