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Article
On Singular Critical Points of Positive Operators in Krein Spaces
Proceedings of the American Mathematical Society
  • Branko Ćurgus, Western Washington University
  • Aurelian Gheondea
  • Heinz Langer
Document Type
Article
Publication Date
9-1-2000
Disciplines
Abstract

We give an example of a positive operator B in a Krein space with the following properties: the nonzero spectrum of B consists of isolated simple eigenvalues, the norms of the orthogonal spectral projections in the Krein space onto the eigenspaces of B are uniformly bounded and the point ∞ is a singular critical point of B.

Required Publisher's Statement

Communicated by David R. Larson

Comments

Communicated by David R. Larson

Citation Information
Branko Ćurgus, Aurelian Gheondea and Heinz Langer. "On Singular Critical Points of Positive Operators in Krein Spaces" Proceedings of the American Mathematical Society Vol. 128 Iss. 9 (2000) p. 2621 - 2626
Available at: http://works.bepress.com/branko_curgus/3/