Abschnittzerlegungen bei oberen Schranken für Eigenwerte von Operatorpolynomen.
absence de résonance près du réel pour l’opérateur de Schrödinger
On donne dans cet exposé des bornes inférieures universelles, en limite semiclassique, de la hauteur des résonances de forme associées aux opérateurs de Schrödinger à l’extérieur d’obstacles avec des conditions au bord de Dirichlet ou de Neumann et des potentiels analytiquement dilatables et tendant vers à l’infini. Ces bornes inférieures sont exponentiellement petites par rapport à la constante de Planck.
Absence of eigenvalues for integro-differential operators with periodic coefficients.
Absence of point spectrum for a class of discrete Schrödinger operators with quasiperiodic potential.
Absence of the singular continuous component in the spectrum of analytic direct integrals.
Absolute and Ordinary Köthe-Toeplitz Duals of Some Sets of Sequences and Matrix Transformations
Absolute continuity and hyponormal operators.
Absolute continuity for Jacobi matrices with power-like weights
This work deals with a class of Jacobi matrices with power-like weights. The main theme is spectral analysis of matrices with zero diagonal and weights where α ∈ (0,1]. Asymptotic formulas for generalized eigenvectors are given and absolute continuity of the matrices considered is proved. The last section is devoted to spectral analysis of Jacobi matrices with qₙ = n + 1 + (-1)ⁿ and .
Absolute Continuity of the Essential Spectrum of - ... + q (t) without Monotony of q.
Absolutely continuous and singular spectral shift functions [Book]
Absolutely continuous linear operators on Köthe-Bochner spaces
Let E be a Banach function space over a finite and atomless measure space (Ω,Σ,μ) and let and be real Banach spaces. A linear operator T acting from the Köthe-Bochner space E(X) to Y is said to be absolutely continuous if whenever μ(Aₙ) → 0, (Aₙ) ⊂ Σ. In this paper we examine absolutely continuous operators from E(X) to Y. Moreover, we establish relationships between different classes of linear operators from E(X) to Y.
Absolutely continuous measures and compact composition operator on spaces of Cauchy transforms.
Absolutely continuous selections from absolutely continuous set valued map
Absolutely continuous spectrum and scattering in the surface Maryland model
We study the discrete Schrödinger operator in with the surface quasi periodic potential , where . We first discuss a proof of the pure absolute continuity of the spectrum of on the interval (the spectrum of the discrete laplacian) in the case where the components of are rationally independent. Then we show that in this case the generalized eigenfunctions have the form of the “volume” waves, i.e. of the sum of the incident plane wave and reflected from the hyper-plane waves, the form...
Absolutely (∞,p) summing and weakly-p-compact operators in Banach spaces.
A sequence (xn) in a Banach space X is said to be weakly-p-summable, 1 ≤ p < ∞, when for each x* ∈ X*, (x*xn) ∈ lp. We shall say that a sequence (xn) is weakly-p-convergent if for some x ∈ X, (xn - x) is weakly-p-summable.
Absolutely (∞,p) summing and weakly-p-compact operators in C(K).
In this note we review some results about:1. Representation of Absolutely (∞,p) summing operators (∏∞,p) in C(K,E)2. Dunford-Pettis properties.
Absolutely -summing operators in -spaces
Absolutely--summing operators in -spaces I
Absolutely--summing operators in -spaces II
Absolutely p-summing operators and Banach spaces containing all uniformly complemented