Positive biorthogonal curvature on $S^2\times T^2$

We construct explicit Riemannian metrics with positive biorthogonal curvature on $S^{2} \times T^{2}$ , answering a question of Bettiol. In particular, positive biorthogonal curvature on a closed four-manifold does not force its fundamental group to be virtually free.

Positive biorthogonal curvature on $S^{2} \times T^{2}$

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Positive biorthogonal curvature on $S^{2} \times T^{2}$

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Positive biorthogonal curvature on S2×T2S2×T2

文献摘要

讨论

|讲解博客

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Positive biorthogonal curvature on S2×T2S2×T2

文献摘要

讨论

|讲解博客

|AI智能校验

Positive biorthogonal curvature on $S^{2} \times T^{2}$

讲解博客

AI智能校验

Positive biorthogonal curvature on $S^{2} \times T^{2}$

讲解博客

AI智能校验