Positivity for Operator Matrices
Panos Charissiadis, Rainer J. Nagel · 2017
We consider two Banach spaces, ( E , |·|) and ( D , ||·||) with D continuously imbedded in E and denote by D ¯ https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315141244/3614d45d-5842-4d20-a390-261e22b5beeb/content/in6_1.tif"/> the closure of D in E.