环面流形与非负曲率
微分几何
2015-11-05 v5 几何拓扑
摘要
环面流形 是一个 维可定向流形,具有 维环面的有效作用,且满足 。在本文中,我们讨论了容许不变非负曲率度量的环面流形的分类。如果 是一个容许此类度量的单连通环面流形,则 微分同胚于球面乘积上自由线性环面作用的商。我们还对满足 的有理椭圆环面流形 进行了同胚分类。
引用
@article{arxiv.1401.0403,
title = {Torus manifolds and non-negative curvature},
author = {Michael Wiemeler},
journal= {arXiv preprint arXiv:1401.0403},
year = {2015}
}
备注
26 pages; There was a gap in the arguments in section 4 therefore Theorem 1.1 is only proved for torus manifolds with vanishing odd degree integer cohomology; results about non-simply connected torus manifolds added; to appear in J. Lond. Math. Soc