Geometric inequalities involving three quantities in warped product manifolds

Abstract: In this paper, we establish two families of sharp geometric inequalities for closed hypersurfaces in space forms or other warped product manifolds. Both families of inequalities compare three distinct geometric quantities. The first family concerns the $k$-th boundary momentum, area, and weighted volume, and has applications to Weinstock-type inequalities for Steklov or Wentzell eigenvalues on star-shaped mean convex domains. This generalizes the main results of [12]. The second family involves a weighted $k$-th mean curvature integral and two distinct quermassintegrals and extends the authors' recent work [33] with G. Wheeler and V.-M. Wheeler.