Asian Journal of Mathematics
Volume 21 (2017)
Poincaré and mean value inequalities for hypersurfaces in Riemannian manifolds and applications
Pages: 697 – 720
In the first part of this paper we prove some new Poincaré inequalities, with explicit constants, for domains of any hypersurface of a Riemannian manifold with sectional curvatures bounded from above. This inequalities involve the first and the second symmetric functions of the eigenvalues of the second fundamental form of such hypersurface. We apply these inequalities to derive some isoperimetric inequalities and to estimate the volume of domains enclosed by compact self-shrinkers in terms of its scalar curvature. In the second part of the paper we prove some mean value inequalities and as consequences we derive some monotonicity results involving the integral of the mean curvature.
Poincaré inequality, isoperimetric inequality, monotonicity, hypersurfaces, mean curvature, scalar curvature
2010 Mathematics Subject Classification
H. Alencar was partially supported by CNPq of Brazil.
Paper received on 11 October 2015.