Parabolic Harnack inequality of viscosity solutions on Riemannian manifolds
arXiv:1304.7351
Abstract
We consider viscosity solutions to nonlinear uniformly parabolic equations in nondivergence form on a Riemannian manifold , with the sectional curvature bounded from below by for . In the elliptic case, Wang and Zhang \cite{WZ} recently extended the results of \cite{Ca} to nonlinear elliptic equations in nondivergence form on such , where they obtained the Harnack inequality for classical solutions. We establish the Harnack inequality for nonnegative {\it viscosity solutions} to nonlinear uniformly {\it parabolic equations} in nondivergence form on . The Harnack inequality of nonnegative viscosity solutions to the elliptic equations is also proved.
35 pages, 1 figure