JOINT SPECTRAL SETS

Original Articles

JOINT SPECTRAL SETS

Published in: Quaestiones Mathematicae
Volume 4 , issue 2 , 1980 , pages: 109–120
DOI: 10.1080/16073606.1980.9631865
Author(s): M.A. Muller Department of Mathematics, South Africa
Keywords: 47A25
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Abstract

We consider the problem: if S,TEB(H) are commuting operators with von Neumann spectral sets X and Y respectively, does it imply that X x Y is a joint spectral set for the pair (S,T)?
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