| On the Hopf Lemma (2007) | |||||||||
Abstract | |||||||||
| The Hopf Lemma for second order elliptic operators is proved to hold in domains with $C^{1,\alpha}$, and even less regular, boundaries. It need not hold for $C^1$ boundaries. Corresponding results are proved for second order parabolic operators.. Comment: This paper has been withdrawn, since the result had been proved earlier | |||||||||
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