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arXiv · 1502.02270

Four-dimensional manifolds with positive biorthogonal curvature

Renato G. Bettiol
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Abstract

We classify, up to homeomorphisms, the closed simply-connected 4-manifolds that admit a Riemannian metric for which averages of pairs of sectional curvatures of orthogonal planes are positive.

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BibTeXRIS

Renato G. Bettiol. 2015-02-08. Four-dimensional manifolds with positive biorthogonal curvature. https://doi.org/10.4310/ajm.2017.v21.n2.a7

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