| Partial results on extending the Hopf Lemma (2009) | |||||||||
Abstract | |||||||||
| In [1], Theorem 3, the authors proved, in one dimension, a generalization of the Hopf Lemma, and the question arose if it could be extended to higher dimensions. In this paper we present two conjectures as possible extensions, and give a very partial answer. We write this paper to call attention to the problem. | |||||||||
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