
Characterizations of umbilic hypersurfaces in warped product manifolds
Shanze GAO, Hui MA
Front. Math. China ›› 2021, Vol. 16 ›› Issue (3) : 689-703.
Characterizations of umbilic hypersurfaces in warped product manifolds
We consider the closed orientable hypersurfaces in a wide class of warped product manifolds, which include space forms, deSitter-Schwarzschild and Reissner-Nordström manifolds. By using an integral formula or Brendle's Heintze-Karcher type inequality, we present some new characterizations of umbilic hypersurfaces. These results can be viewed as generalizations of the classical Jellet-Liebmann theorem and the Alexandrov theorem in Euclidean space.
Umbilic / k-th mean curvature / warped products
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