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arXiv · 2108.05764

Gilbarg-Serrin Equation and Lipschitz Regularity

Vladimir Maz'ya·Robert McOwen
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Abstract

We discuss conditions for Lipschitz and C^1 regularity for a uniformly elliptic equation in divergence form with coefficients that were introduced by Gilbarg & Serrin. In particular, we find cases where Lipschitz or C^1 regularity holds but the coefficients are not Dini continuous, or do not even have Dini mean oscillation. The form of the coefficients also enables us to obtain specific conditions and examples for which there exists a weak solution that is not Lipschitz continuous.

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Vladimir Maz'ya, Robert McOwen. 2021-08-12. Gilbarg-Serrin Equation and Lipschitz Regularity. https://arxiv.org/abs/2108.05764

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