Positively curved 4-manifolds and the nonnegativity of isotropic curvatures
type: Item
instance of: scholarly article
title: Positively curved 4-manifolds and the nonnegativity of isotropic curvatures
zbMATH Open document ID: 0888.53029
author: M. Helena Noronha
published in: Michigan Mathematical Journal
publication date: 1998-06-07T00:00:00Z
review text: The author studies some questions concerning the topology of compact connected oriented 4-manifolds \(M\) that admit a metric of positive sectional curvature. Various results are proved, starting from certain assumptions on the isotropic curvature in each point of \(M\) (this concept was defined by \textit{M. J. Micallef} and \textit{J. D. Moore} [Ann. Math., II. Ser. 127, 199-227 (1988; Zbl 0661.53027)] and/or on the Laplacian of the Weyl tensor \(W\) of \(M\).
Mathematics Subject Classification ID: 53C20
zbMATH DE Number: 1080670
zbMATH Keywords: positively curved four-manifolds
zbMATH Keywords: isotropic curvature
zbMATH Keywords: Weyl tensor
reviewed by: Alberto Cavicchioli
MaRDI profile type: Publication
full work available at URL: https://doi.org/10.1307/mmj/1029005700
OpenAlex ID: W2020236419
DOI: 10.1307/MMJ/1029005700
description: scientific article; zbMATH DE number 1080670