Spectra of normal composition operators on \(L^ 2\)-spaces
type: Item
instance of: scholarly article
title: Spectra of normal composition operators on \(L^ 2\)-spaces
zbMATH Open document ID: 0581.47021
author: R. K. Singh
author: T. Veluchamy
published in: Indian Journal of Pure \& Applied Mathematics
publication date: 1985-01-01T00:00:00Z
review text: Let \(C_ T\) be a composition operator on \(L^ 2(\lambda)\), where \(\lambda\) is a sigma-finite measure on a measurable space (X,\({\mathcal S})\). The spectra of normal composition operators are determined in this note. A sufficient condition for the spectrum of a normal composition operator to have cyclic symmetry is obtained. Weyl spectra of normal composition operators are also obtained.
Mathematics Subject Classification ID: 47B38
Mathematics Subject Classification ID: 47B15
Mathematics Subject Classification ID: 47A10
zbMATH DE Number: 3929763
zbMATH Keywords: spectra of normal composition operators
zbMATH Keywords: cyclic symmetry
zbMATH Keywords: Weyl spectra
MaRDI profile type: Publication
description: scientific article; zbMATH DE number 3929763