The closure of the numerical range contains the spectrum
type: Item
instance of: scholarly article
title: The closure of the numerical range contains the spectrum
zbMATH Open document ID: 0137.32501
DOI: 10.1090/S0002-9904-1964-11237-4
author: Eduardo H. Zarantonello
published in: Bulletin of the American Mathematical Society
publication date: 1964-01-01T00:00:00Z
zbMATH DE Number: 3223124
zbMATH Keywords: functional analysis
MaRDI profile type: Publication
cites work: Q4334625
cites work: Q3231796
cites work: REMARKS ON NONLINEAR FUNCTIONAL EQUATIONS
full work available at URL: s0002-9904-1964-11237-4
OpenAlex ID: W2019111937
description: scientific article; zbMATH DE number 3223124