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Constructing an operator from a complete and minimal set

Published online by Cambridge University Press:  12 July 2007

Jiban Nath
Affiliation:
Department of Mathematics, King's College London, Strand, London WC2R 2LS, UK (jnath@mth.kcl.ac.uk)

Abstract

Let be a complete and minimal set in a Hilbert space X, which is not an unconditional basis. Then there exists an operator that is densely defined on X, does not have a good spectral behaviour and all the vectors {ei} are its eigenvectors.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 2003

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