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Article
Preservation of the Range Under Perturbations of an Operator
Proceedings of the American Mathematical Society
  • Branko Ćurgus, Western Washington University
  • Branko Najman
Document Type
Article
Publication Date
9-1-1997
Disciplines
Abstract

A sufficient condition for the stability of the range of a positive operator in a Hilbert space is given. As a consequence, we get a class of additive perturbations which preserve regularity of the critical point 0 of a positive operator in a Krein space.

Required Publisher's Statement

Communicated by Palle E. T. Jorgensen

Comments

Communicated by Palle E. T. Jorgensen

Citation Information
Branko Ćurgus and Branko Najman. "Preservation of the Range Under Perturbations of an Operator" Proceedings of the American Mathematical Society Vol. 125 Iss. 9 (1997) p. 2627 - 2631
Available at: http://works.bepress.com/branko_curgus/5/