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arXiv · 2206.08043

Around the normal derivative lemma

Darya E. Apushkinskaya·Alexander I. Nazarov
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Abstract

This survey provides a description of the history and the state of the art of one of the most important fields in the qualitative theory of elliptic partial differential equations including the strong maximum principle, the boundary point principle (the normal derivative lemma) and related topics.

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Darya E. Apushkinskaya, Alexander I. Nazarov. 2022-06-16. Around the normal derivative lemma. https://arxiv.org/abs/2206.08043

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