Minkowski formulae and Alexandrov theorems in space time

Mu Tao Wang, Ye Kai Wang, Xiangwen Zhang

研究成果: Article同行評審

8 引文 斯高帕斯(Scopus)

摘要

The classical Minkowski formula is extended to spacelike codimension-two submanifolds in spacetimes which admit "hidden symmetry" from conformal Killing-Yano two-forms. As an application, we obtain an Alexandrov type theorem for spacelike codimension-two submanifolds in a static spherically symmetric spacetime: a codimension-two submanifold with constant normalized null expansion (null mean curvature) must lie in a shear-free (umbilical) null hypersurface. These results are generalized for higher order curvature invariants. In particular, the notion of mixed higher order mean curvature is introduced to highlight the special null geometry of the submanifold. Finally, Alexandrov type theorems are established for spacelike submanifolds with constant mixed higher order mean curvature, which are generalizations of hypersurfaces of constant Weingarten curvature in the Euclidean space.

原文English
頁(從 - 到)249-290
頁數42
期刊Journal of Differential Geometry
105
發行號2
DOIs
出版狀態Published - 2017 二月

All Science Journal Classification (ASJC) codes

  • Analysis
  • Algebra and Number Theory
  • Geometry and Topology

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