Michael-Simon type inequalities in hyperbolic space $\mathbb{H}^{n+1}$ via Brendle-Guan-Li's flows

TL;DR

This paper establishes new sharp Michael-Simon inequalities in hyperbolic space using Brendle-Guan-Li's flows, extending classical inequalities to hyperbolic geometry and providing new geometric bounds for convex hypersurfaces.

Contribution

The paper introduces novel sharp Michael-Simon inequalities in hyperbolic space via curvature flows, generalizing previous Euclidean results to hyperbolic geometry.

Findings

Established a sharp hyperbolic Michael-Simon inequality for mean curvatures.

Proved a sharp inequality for the k-th mean curvatures in hyperbolic space.

Connected the inequalities to Minkowski and Alexandrov-Fenchel inequalities in special cases.

Abstract

In the present paper, we first establish and verify a new sharp hyperbolic version of the Michael-Simon inequality for mean curvatures in hyperbolic space $\mathbb{H}^{n+1}$ based on the locally constrained inverse curvature flow introduced by Brendle, Guan and Li, provided that $M$ is $h$-convex and $f$ is a positive smooth function, where $\lambda^{'}(r)=\rm{cosh}$$r$. In particular, when $f$ is of constant, (0.1) coincides with the Minkowski type inequality stated by Brendle, Hung, and Wang. Further, we also establish and confirm a new sharp Michael-Simon inequality for the $k$-th mean curvatures in $\mathbb{H}^{n+1}$ by virtue of the Brendle-Guan-Li's flow, provided that $M$ is $h$-convex and $\Omega$ is the domain enclosed by $M$. In particular, when $f$ is of constant and $k$ is odd, (0.2) is exactly the weighted Alexandrov-Fenchel inequalities proven by Hu, Li, and Wei.