Uniform gradient estimates on manifolds with a boundary and applications
by Li-Juan Cheng, Anton Thalmaier and James Thompson
Abstract
We revisit the problem of obtaining uniform gradient estimates for Dirichlet and Neumann heat semigroups on Riemannian manifolds with boundary. As applications, we obtain isoperimetric inequalities, using Ledoux's argument, and uniform quantitative gradient estimates, firstly for bounded functions with boundary conditions and then for the unit spectral projection operators of Dirichlet and Neumann Laplacians.
Anal. Math. Phys. 8 (2018), no. 4, 571-588
https://doi.org/10.1007/s13324-018-0228-6
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