Some Zaremba-Hopf-Oleinik Boundary Comparison Principles at Characteristic Points
We investigate the so-called Hopf lemma for certain degenerate-elliptic equations at characteristic boundary points of bounded open sets. For such equations, the validity of the Hopf lemma is related to the fact that the boundary of the open set reflects the underlying geometry of the specific opera...
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| Format: | Article |
| Language: | English |
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University of Bologna
2015-12-01
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| Series: | Bruno Pini Mathematical Analysis Seminar |
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| Online Access: | http://mathematicalanalysis.unibo.it/article/view/5890 |