中文

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 MM 是一个 2n2n 维可定向流形,具有 nn 维环面的有效作用,且满足 MTM^T\neq \emptyset。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 MM 是一个容许此类度量的单连通环面流形,则 MM 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 Hodd(M;Z)=0H^{\text{odd}}(M;\mathbb{Z})=0 的有理椭圆环面流形 MM 进行了同胚分类。

关键词

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