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Gradient estimates for the eigenfunctions on compact manifolds with boundary and Hörmander Multiplier Theorem

  • Xiangjin Xu
Published/Copyright: March 12, 2009
Forum Mathematicum
From the journal Volume 21 Issue 3

Abstract

On compact Riemannian manifolds (M,g) of dimension n ≥ 2 with smooth boundary, the gradient estimates for the eigenfunctions of the Dirichlet Laplacian are proved by the maximum principle. Using the L estimates and gradient estimates, the Hörmander multiplier theorem is shown for the eigenfunction expansion of Dirichlet Laplacian on compact manifolds with boundary.

Received: 2007-09-04
Published Online: 2009-03-12
Published in Print: 2009-May

© de Gruyter 2009

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