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The spectral mapping theorem for the essential approximate point spectrum

100%

Schmoeger C.

Colloquium Mathematicum

1997

tom 74

nr 2

167-176

Perturbation theory relative to a Banach algebra of operators

80%

Barnes B. A.

Studia Mathematica

1993

tom 106

nr 2

153-174

Let ℬ be a Banach algebra of bounded linear operators on a Banach space X. Let S be a closed linear operator in X, and let R be a linear operator in X. In this paper the spectral and Fredholm theory relative to ℬ of the perturbed operator S + R is developed. In particular, the situation where R is S-inessential relative to ℬ is studied. Several examples are given to illustrate the usefulness of these concepts.

Essential spectra of weighted composition operators with hyperbolic symbols

70%

Hyvärinen O., Nieminen I.

Concrete Operators

2015

tom 2

nr 1

In this paperwe study both the spectra and the essential spectra ofweighted composition operators on Hardy spaces Hp(ⅅ), standard weighted Bergman spaces Apα(ⅅ) and weighted H∞1-type spaces when the symbols are of hyperbolic type

Ograniczanie wyników

1 Colloquium Mathematicum

1 Concrete Operators

1 Studia Mathematica

1 Barnes B. A.

1 Hyvärinen O.

1 Nieminen I.

1 Schmoeger C.

1 2015

1 1998

1 1993

Wyniki wyszukiwania

The spectral mapping theorem for the essential approximate point spectrum

Perturbation theory relative to a Banach algebra of operators

Essential spectra of weighted composition operators with hyperbolic symbols