FREDHOLM OPERATORS AND THE ESSENTIAL SPECTRUM,

Abstract

Fredholm operators are defined and their basic properties are proved. The essential spectrum of an arbitrary closed operator is considered and its invariance under several kinds of perturbation is proved. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1965
Accession Number
AD0611812

Entities

People

  • Martin Schechter

Organizations

  • New York University

Tags

DTIC Thesaurus Topics

  • Diffraction
  • Invariance
  • Mathematical Analysis
  • Mathematics
  • Numerical Analysis
  • Perturbations
  • Spectra

Fields of Study

  • Mathematics

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)