## Abstract Finite interval convolution operators acting between Bessel potential spaces __H^s^~p~__ are studied in regard to Fredholm properties and invertibility. The Fourier transform of the kernel‐function of the operator is assumed to be piecewise continuous on R. An example from diffraction t
Convolution type operators on cones and their finite sections
✍ Scribed by Helena Mascarenhas; Bernd Silbermann
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 322 KB
- Volume
- 278
- Category
- Article
- ISSN
- 0025-584X
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
This paper is concerned with finite sections of convolution type operators defined on cones, whose symbol is the Fourier transform of an integrable function on ℝ^2^. The algebra of these finite sections satisfies a set of axioms (standard model) that ensures some asymptotic properties like the convergence of the condition numbers, singular values, ε‐pseudospectrum and also gives a relation between the singular values of an approximation sequence and the kernel dimensions of a set of associated operators. This approach furnishes a method to determine whether a Fredholm convolution operator on a cone is invertible. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
📜 SIMILAR VOLUMES
## Abstract Convolution type operators acting between Bessel potential spaces defined on a union of two finite intervals are studied from the point of view of their regularity properties. The operators are assumed to have kernels with Fourier transforms in the class of piecewise continuous matrix f
## Abstract We study in detail Schrödinger–type operators on a bounded interval of **R** with dissipative boundary conditions. The characteristic function of this operator is computed, its minimal self–adjoint dilation is constructed and the generalized eigenfunction expansion for the dilation is d
y1 isometry of L. A set of generators and the full automorphism group of V q are L determined.
point sub-VOA, V G , was studied previously by the authors, who found a set of Ž generators and determined the automorphism group when G is cyclic from the . Ž . '' A-series'' or dihedral from the ''D-series'' . In the present article, we obtain analogous results for the remaining possibilities for