Functions locally almost 1-harmonic

Author: Françoise Demengel  

Publisher: Taylor & Francis Ltd

ISSN: 0003-6811

Source: Applicable Analysis, Vol.83, Iss.9, 2004-09, pp. : 865-896

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Abstract

In this article we establish some theoretical results for functions in BV(Omega ) which are such that div (nabla u / |nabla u|)isin LN(Omega). Omega denotes an open bounded set in and sigma = (nabla u / |nabla u|) is such that sigma · nabla u = |nabla u| in the distributional sense. Among the results are the study of the first eigenvalue and related eigenfunctions for the 1-Laplacian operator defined as div (nabla · / |nabla · |).