Title

The Model Operator and Its Approximants

Publication Name

Lecture Notes in Mathematics

Abstract

In the present chapter we introduce the set-up for the rest of these notes as well as explain the approximation scheme we employ in our approach. The idea is to introduce a spectral ‘cut-off’ by the characteristic function of the interval [−n, n] for a positive integer n. We use the subscript n on the operators introduced in Chap. 3 to indicate these spectrally cut-off or ‘reduced’ versions.

Open Access Status

This publication is not available as open access

Volume

2323

First Page

41

Last Page

61

COinS
 

Link to publisher version (DOI)

http://dx.doi.org/10.1007/978-3-031-19436-8_3