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Results tagged with elliptic-pde
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user 105893
Questions about partial differential equations of elliptic type. Often used in combination with the top-level tag ap.analysis-of-pdes.
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Harnack inequality for the minimal surface equation
We consider the minimal surface equation $$
(1+|\nabla u|^2) \, \Delta u=\sum_{i,j=1}^n\partial_iu \, \partial_ju \, \partial_{ij}u\quad\hbox{in $B_1\subset\mathbb R^n.$}
$$
If $u\in C^2(B_1)$ is a po …
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