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