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Mathematische Zeitschrift
Article . 1995 . Peer-reviewed
License: Springer TDM
Data sources: Crossref
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
zbMATH Open
Article . 1995
Data sources: zbMATH Open
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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Hausdorff convergence and the fundamental group

Authors: Tuschmann, Wilderich;

Hausdorff convergence and the fundamental group

Abstract

When investigating general limits of Hausdorff convergent sequences of Riemannian manifolds, only little is known about relations between topological properties of the terms of the sequence and the topology of the limits. In the present paper the following theorem is proved: Let \(X\) be a limit of a Hausdorff convergent sequence \((M_ k)_{k \in \mathbb{N}}\) of \(n\)-dimensional compact connected Riemannian manifolds with uniformly bounded curvatures and diameters. Then for sufficiently large \(k\) there exist surjective group homomorphisms \(\pi_ 1 (M_ k) \to \pi_ 1 (X)\) from the fundamental groups of the \(M_ k\) to the fundamental group of \(X\). Furthermore it is shown that any such \(X\) is locally simply connected and possesses a universal covering. Applications of the above theorem, in particular to classes of aspherical manifolds, and its extension to sequences of Riemannian manifolds subject only to a lower curvature bound are discussed.

Country
Germany
Keywords

ddc:510, 510.mathematics, curvature bound, Global geometric and topological methods (à la Gromov); differential geometric analysis on metric spaces, Smooth approximations in differential topology, Hausdorff convergent sequence, Article, Mathematics, info:eu-repo/classification/ddc/510, fundamental group, 510

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
5
Average
Top 10%
Average
Green