Abstract
In this note we use Gelfand theory to show that the validity of a spectral mapping theorem for a given representation Φ:M → L(X) of a Banach function algebra M on a bounded open set in Cn implies the validity of one-sided spectral mapping theorems for all subspectra. In particular, a spectral mapping theorem for the Taylor spectrum yields at least a one-sided spectral mapping theorem for the essential Taylor spectrum. In our main exampleMis the multiplier algebra of a Banach space X of analytic functions and F is the canonical representation of M on X. In this case, we show that interpolating sequences for M, or suitably defined Berezin transforms, can sometimes be used to obtain the missing inclusion for the essential Taylor spectrum or its parts.
Mathematics Subject Classification. Primary 47A10, 47A13; secondary 47A60, 47B32.
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Dedicated to Professor J. William Helton on the occasion of his 65th birthday
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Douglas, R.G., Eschmeier, J. (2012). Spectral Inclusion Theorems. In: Dym, H., de Oliveira, M., Putinar, M. (eds) Mathematical Methods in Systems, Optimization, and Control. Operator Theory: Advances and Applications, vol 222. Birkhäuser, Basel. https://doi.org/10.1007/978-3-0348-0411-0_10
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