Extremal properties of the unit ball in \(H^ 1\)
type: Item
instance of: scholarly article
title: Extremal properties of the unit ball in \(H^ 1\)
zbMATH Open document ID: 0757.46031
DOI: 10.1016/0019-3577(92)90032-G
author: Dirk Temme
author: Jan Wiegerinck
published in: Indagationes Mathematicae. New Series
publication date: 1992-09-27T00:00:00Z
review text: The authors prove the following main theorem: Theorem 1. Let \(f\in S(H^ 1)\) be outer. If \(d(\arg f,C(T)+H^ \infty)<{\pi\over 2}\), then \(f\) is an exposed point. Theorem 2. If \(f\) is an exposed point of \(B(H^ 1)\) and \(d(f/| f|,C(T)+H^ \infty)<1\) then \(f\) is a strongly exposed point.
Mathematics Subject Classification ID: 46B20
Mathematics Subject Classification ID: 46J15
zbMATH DE Number: 57237
zbMATH Keywords: \(H^ 1\) space
zbMATH Keywords: strongly exposed point
reviewed by: Xin-Tai Yu
MaRDI profile type: Publication
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full work available at URL: 0019-3577(92)90032-g
OpenAlex ID: W2091712086
description: scientific article; zbMATH DE number 57237