Document Type

Article

Publication Date

9-2000

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.

Publication Title

Proceedings of the American Mathematical Society

Volume

128

Issue

9

First Page

2621

Last Page

2626

Required Publisher's Statement

First published in "Proceedings of the American Mathematical Society" in 2000, published by the American Mathematical Society.

Comments

Communicated by David R. Larson

Included in

Mathematics Commons

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