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

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.

21 pages. Comments welcome

References in corpus (2)

• Volume preserving flow and Alexandrov-Fenchel type inequalities in hyperbolic space
• Geometric inequalities for hypersurfaces with nonnegative sectional curvature in hyperbolic space

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• A Minkowski-type inequality for capillary hypersurfaces in a half-space
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• A fully nonlinear locally constrained curvature flow for capillary hypersurface
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