A remark on gradients of harmonic functions
Wensheng Wang
University of Southern California, Los Angeles, USA
Abstract
In any domain there is nonzero harmonic function continuous up to the boundary such that the function and its gradient on the boundary vanish on a set of positive measure.
Cite this article
Wensheng Wang, A remark on gradients of harmonic functions. Rev. Mat. Iberoam. 11 (1995), no. 2, pp. 227–245
DOI 10.4171/RMI/171