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arXiv 1002.3934math.DGmath-phmath.MP
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测地流允许非平凡动量平方积分的闭曲面上的伪黎曼度量及二维伪黎曼度量的投影Obata猜想的证明

Pseudo-Riemannian metrics on closed surfaces whose geodesic flows admit nontrivial integrals quadratic in momenta, and proof of the projective Obata conjecture for two-dimensional pseudo-Riemannian metrics

Vladimir S. Matveev

摘要:

我们描述了所有的伪黎曼度量的闭曲面的测地流允许非平凡积分平方动量。作为应用,我们解决了闭曲面上的Beltrami问题,证明了闭曲面上非常曲率的二次超可积度量的不存在性,并证明了投影Obata猜想的二维伪黎曼版本.

英文摘要:

We describe all pseudo-Riemannian metrics on closed surfaces whose geodesic flows admit nontrivial integrals quadratic in momenta. As an application, we solve the Beltrami problem on closed surfaces, prove the nonexistence of quadratically-superintegrable metrics of nonconstant curvature on closed surfaces, and prove the two-dimensional pseudo-Riemannian version of the projective Obata conjecture.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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