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Existence and comparison results for an elliptic equation involving the 1-Laplacian and $$L^1$$ L 1 -data

Existence and comparison results for an elliptic equation involving the 1-Laplacian and $$L^1$$ L... This paper is devoted to analyze the Dirichlet problem for a nonlinear elliptic equation involving the 1-Laplacian and a total variation term, that is, the inhomogeneous case of the equation arising in the level set formulation of the inverse mean curvature flow. We study this problem in an open bounded set with Lipschitz boundary. We prove an existence result and a comparison principle for nonnegative $$L^1$$ L 1 -data. Moreover, we search the summability that the solution reaches when more regular $$L^p$$ L p -data, with $$1<p<N$$ 1 < p < N , are considered and we give evidence that this summability is optimal. To prove these results, we apply the theory of $$L^\infty $$ L ∞ -divergence measure fields which goes back to Anzellotti (Ann Mat Pura Appl (4) 135:293–318, 1983). The main difficulties of the proofs come from the absence of a definition for the pairing of a general $$L^\infty $$ L ∞ -divergence measure field and the gradient of an unbounded BV-function. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Evolution Equations Springer Journals

Existence and comparison results for an elliptic equation involving the 1-Laplacian and $$L^1$$ L 1 -data

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References (35)

Publisher
Springer Journals
Copyright
Copyright © 2017 by Springer International Publishing
Subject
Mathematics; Analysis
ISSN
1424-3199
eISSN
1424-3202
DOI
10.1007/s00028-017-0388-0
Publisher site
See Article on Publisher Site

Abstract

This paper is devoted to analyze the Dirichlet problem for a nonlinear elliptic equation involving the 1-Laplacian and a total variation term, that is, the inhomogeneous case of the equation arising in the level set formulation of the inverse mean curvature flow. We study this problem in an open bounded set with Lipschitz boundary. We prove an existence result and a comparison principle for nonnegative $$L^1$$ L 1 -data. Moreover, we search the summability that the solution reaches when more regular $$L^p$$ L p -data, with $$1<p<N$$ 1 < p < N , are considered and we give evidence that this summability is optimal. To prove these results, we apply the theory of $$L^\infty $$ L ∞ -divergence measure fields which goes back to Anzellotti (Ann Mat Pura Appl (4) 135:293–318, 1983). The main difficulties of the proofs come from the absence of a definition for the pairing of a general $$L^\infty $$ L ∞ -divergence measure field and the gradient of an unbounded BV-function.

Journal

Journal of Evolution EquationsSpringer Journals

Published: Apr 5, 2017

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