Add to ORKGThis paper treatises the preservation of some spectra under perturbations not necessarily commutative and generalizes several results which have been proved in the case of commuting operators.Comment: 1
This book treats: - spectral theory of Banach *-algebras, - basic representation theory of normed *-...
We consider the Toeplitz operators on the weighted Bergman spaces over the unit ball $\mathbb{B}^n$ ...
AbstractLet H be a complex Hilbert space, and let Gi, i = 1, 2, be closed and orthogonal subspaces o...
AbstractThe property (w) is a variant of Weyl's theorem, for a bounded operator T acting on a Banach...
An operator T∈ℬ(X) defined on a Banach space X satisfies property (gb) if the complement in the appr...
Property (gb) for a bounded linear operator T on a Banach space X means that the points c of the app...
Property (gb) for a bounded linear operator T on a Banach space X means that the points c of the app...
We study the relationships between the spectra derived from Fredholm theory corresponding to two giv...
Let ℒ() be the algebra of all bounded operators acting on an infinite- dimensional complex Banach sp...
summary:We study the relationships between the spectra derived from Fredholm theory corresponding to...
summary:We study the relationships between the spectra derived from Fredholm theory corresponding to...
Let X be a Banach space and let T: X →X be a bounded linear operator with closed range. We study a c...
International audienceWe present an improved version of commutator methods for unitary operators und...
We define the spectrum of an element a in a non-associative algebra A according to a classical notio...
Let $H $ be acomplex Hilbert space and let $\mathcal{B}(H) $ denote the Banach algebra of all (bound...
This book treats: - spectral theory of Banach *-algebras, - basic representation theory of normed *-...
We consider the Toeplitz operators on the weighted Bergman spaces over the unit ball $\mathbb{B}^n$ ...
AbstractLet H be a complex Hilbert space, and let Gi, i = 1, 2, be closed and orthogonal subspaces o...
AbstractThe property (w) is a variant of Weyl's theorem, for a bounded operator T acting on a Banach...
An operator T∈ℬ(X) defined on a Banach space X satisfies property (gb) if the complement in the appr...
Property (gb) for a bounded linear operator T on a Banach space X means that the points c of the app...
Property (gb) for a bounded linear operator T on a Banach space X means that the points c of the app...
We study the relationships between the spectra derived from Fredholm theory corresponding to two giv...
Let ℒ() be the algebra of all bounded operators acting on an infinite- dimensional complex Banach sp...
summary:We study the relationships between the spectra derived from Fredholm theory corresponding to...
summary:We study the relationships between the spectra derived from Fredholm theory corresponding to...
Let X be a Banach space and let T: X →X be a bounded linear operator with closed range. We study a c...
International audienceWe present an improved version of commutator methods for unitary operators und...
We define the spectrum of an element a in a non-associative algebra A according to a classical notio...
Let $H $ be acomplex Hilbert space and let $\mathcal{B}(H) $ denote the Banach algebra of all (bound...
This book treats: - spectral theory of Banach *-algebras, - basic representation theory of normed *-...
We consider the Toeplitz operators on the weighted Bergman spaces over the unit ball $\mathbb{B}^n$ ...
AbstractLet H be a complex Hilbert space, and let Gi, i = 1, 2, be closed and orthogonal subspaces o...