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arXiv · 1811.05776

Alexandrov-Fenchel inequalities for convex hypersurfaces with free boundary in a ball

Julian Scheuer·Guofang Wang·Chao Xia
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Abstract

In this paper we first introduce quermassintegrals for free boundary hypersurfaces in the $(n+1)$-dimensional Euclidean unit ball. Then we solve some related isoperimetric type problems for convex free boundary hypersurfaces, which lead to new Alexandrov-Fenchel inequalities. In particular, for $n=2$ we obtain a Minkowski-type inequality and for $n=3$ we obtain an optimal Willmore-type inequality. To prove these estimates, we employ a specifically designed locally constrained inverse harmonic mean curvature flow with free boundary.

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Julian Scheuer, Guofang Wang, Chao Xia. 2018-11-14. Alexandrov-Fenchel inequalities for convex hypersurfaces with free boundary in a ball. https://doi.org/10.4310/jdg%2F1645207496

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