On a Lemma of O'Raifeartaigh and Segal

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Authors

  • Vasile Istratescu
     Institut de Mathematique Academie de la Republique Socialists de Roumanie, Bucarest ,RO

DOI:

https://doi.org/10.18311/jims/1969/16744

Abstract

The following lemma was proved by O'Raifeartaigh and Segal [2], [1].

Lemma. If T is a normal operator on a Hilbew space and if for some integer n, x is in the domain of Tn and Tnx = 0 then Tx = 0.

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Published

1969-03-01

How to Cite

Istratescu, V. (1969). On a Lemma of O’Raifeartaigh and Segal. The Journal of the Indian Mathematical Society, 33(1), 57–58. https://doi.org/10.18311/jims/1969/16744

Issue

Volume 33, Issue 1, March 1969

Section

Articles

License

Copyright (c) 1969 Vasile Istratescu

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

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