Calculus of Variations and Geometric Measure Theory
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G. Citti - S. Mukherjee

Regularity of quasi-linear equations with Hormander vector fields of step two

created by mukherjee on 08 Oct 2021
modified on 15 Oct 2021

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Preprint

Inserted: 8 oct 2021
Last Updated: 15 oct 2021

Year: 2021

Abstract:

If the smooth vector fields $X_1,\ldots,X_m$ and their commutators span the tangent space at every point in $\Omega\subseteq \mathbb{R}^N$ for any fixed $m\leq N$, then we establish the full interior regularity theory of quasi-linear equations $\sum_{i=1}^m X_i^*A_i(X_1u, \ldots,X_mu)= 0$ with $p$-Laplacian type growth condition. In other words, we show that a weak solution of the equation is locally $C^{1,\alpha}$.


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