A Class of Matrix-valued Schrödinger Operators with Prescribed Finite-band Spectra

A Class of Matrix-valued Schr Odinger Operators with Prescribed Finite-band Spectra Fritz Gesztesy and Lev

Finite Element Analysis of the Effect of Proximal Contour of Class II Composite Restorations on Stress Distribution

Introduction: The aim of this study was to evaluate the effect of proximal contour of class II composite restorations placed with straight or contoured matrix band using composite resins with different modulus of elasticity on stress distribution by finite element method. Methods: In order to evaluate the stress distribution of class II composite restorations using finite element method, upper ...

Spectra and fine spectra of certain lower triangular double-band matrices as operators

*Correspondence: [email protected] Mathematics Department, Faculty of Science, Damietta University, New Damietta, Egypt Abstract In this paper we determine the fine spectrum of the generalized difference operator a,b defined by a lower triangular double-band matrix over the sequence space c0. The class of the operator a,b contains as special cases many operators that have been studied recent...

Compact composition operators on real Banach spaces of complex-valued bounded Lipschitz functions

We characterize compact composition operators on real Banach spaces of complex-valued bounded Lipschitz functions on metric spaces, not necessarily compact, with Lipschitz involutions and determine their spectra.

Inverse Spectral Problems for Schrödinger-type Operators with Distributional Matrix-valued Potentials

The principal purpose of this note is to provide a reconstruction procedure for distributional matrix-valued potential coefficients of Schrödingertype operators on a half-line from the underlying Weyl–Titchmarsh function.