Vector bundles of non-negative curvature over cohomogeneity one manifolds

  • We provide several results on the existence of metrics of non-negative sectional curvature on vector bundles over certain cohomogeneity one manifolds and homogeneous spaces up to suitable stabilization. Beside explicit constructions of the metrics, this is achieved by identifying equivariant structures upon these vector bundles via a comparison of their equivariant and non-equivariant K-theory. For this, in particular, we transcribe equivariant K-theory to equivariant rational cohomology and investigate surjectivity properties of induced maps in the Borel fibration via rational homotopy theory.

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Metadaten
Author:Manuel AmannGND, David González-Álvaro, Marcus Zibrowius
Frontdoor URLhttps://opus.bibliothek.uni-augsburg.de/opus4/83635
URL:https://arxiv.org/abs/1910.05248v2
Parent Title (English):arXiv
Type:Preprint
Language:English
Year of first Publication:2019
Release Date:2021/02/21
Issue:arXiv:1910.05248v2
Institutes:Mathematisch-Naturwissenschaftlich-Technische Fakultät
Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Mathematik
Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Mathematik / Lehrstuhl für Differentialgeometrie