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Note on a remarkable superposition for a nonlinear equation |
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| Authors: | Peter Lindqvist Juan J. Manfredi |
| Affiliation: | Department of Mathematics, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway ; Department of Mathematics, University of Pittsburgh, Pittsburgh, Pennsylvania 15260 |
| Abstract: | We give a simple proof of--and extend--a superposition principle for the equation div , discovered by Crandall and Zhang. An integral representation comes as a byproduct. It follows that a class of Riesz potentials is  -superharmonic. |
| Keywords: | |
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