On the Solvability Complexity Index for Unbounded Selfadjoint and Schrödinger Operators

We study the solvability complexity index (SCI) for unbounded selfadjoint operators on separable Hilbert spaces and perturbations thereof. In particular, we show that if the extended essential spectrum of a selfadjoint operator is convex, then the SCI for computing its spectrum is equal to 1. This r...

Ausführliche Beschreibung

Bibliographische Detailangaben

Veröffentlicht in:	Integral equations and operator theory 2019-12, Vol.91 (6), p.1-23, Article 54
1. Verfasser:	Rösler, Frank
Format:	Artikel
Sprache:	eng
Schlagworte:	Analysis Complexity Hilbert space Mathematics Mathematics and Statistics Operators (mathematics)
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!