Min-max hypersurface in manifold of positive Ricci curvature
Min-max hypersurface in manifold of positive Ricci curvature
复制标题
正里奇曲率流形中的最小-最大超曲面
DOI:
--
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Xin Zhou
中科院分区:
文献类型:
--
作者:
Xin Zhou
In this paper, we study the shape of the min-max minimal hypersurface produced by Almgren-Pitts-Schoen-Simon \cite{AF62, AF65, P81, SS81} in a Riemannian manifold $(M^{n+1}, g)$ of positive Ricci curvature for all dimensions. The min-max hypersurface has a singular set of Hausdorff codimension $7$. We characterize the Morse index, area and multiplicity of this singular min-max hypersurface. In particular, we show that the min-max hypersurface is either orientable and has Morse index one, or is a double cover of a non-orientable stable minimal hypersurface.
As an essential technical tool, we prove a stronger version of the discretization theorem. The discretization theorem, first developed by Marques-Neves in their proof of the Willmore conjecture \cite{MN12}, is a bridge to connect sweepouts appearing naturally in geometry to sweepouts used in the min-max theory. Our result removes a critical assumption of \cite{MN12}, called the no mass concentration condition, and hence confirms a conjecture by Marques-Neves in \cite{MN12}.
影响因子:
2.5
作者:
De Lellis;Tasnady
通讯作者:
Tasnady