Fredholm, Riesz and local spectral theory of multipliers.
Pietro Aiena (1994)
Extracta Mathematicae
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Displaying similar documents to “Decomposable multipliers and applications to harmonic analysis”
Fredholm, Riesz and local spectral theory of multipliers.
Multipliers with closed range on commutative semisimple Banach algebras
A. Ülger (2002)
Studia Mathematica
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Let A be a commutative semisimple Banach algebra, Δ(A) its Gelfand spectrum, T a multiplier on A and T̂ its Gelfand transform. We study the following problems. (a) When is δ(T) = inf{|T̂(f)|: f ∈ Δ(A), T̂(f) ≠ 0} > 0? (b) When is the range T(A) of T closed in A and does it have a bounded approximate identity? (c) How to characterize the idempotent multipliers in terms of subsets of Δ(A)?
On the spectrum of multipliers in Bessel potential spaces
Tatjana Olegovna Shaposhnikova (1985)
Časopis pro pěstování matematiky
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Multipliers and local spectral theory
Kjeld Laursen (1994)
Banach Center Publications
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On the essential order spectrum
Lutz W. Weis (1986)
Extracta Mathematicae
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Fredholm multipliers of semisimple commutative Banach algebras.
Pietro Aiena (1991)
Extracta Mathematicae
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In some recent papers ([1],[2],[3],[4]) we have investigated some general spectral properties of a multiplier defined on a commutative semi-simple Banach algebra. In this paper we expose some aspects concerning the Fredholm theory of multipliers.
The spectrum of operators on
Martin Schechter (1970)
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
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-Multiplier transference induced by representations in Hilbert space
Earl Berkson, T. Gillespie, Paul Muhly (1989)
Studia Mathematica
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