English

Regularity of Lipschitz free boundaries for a $p(x)$-Laplacian problem with right hand side

Analysis of PDEs 2023-05-15 v1

Abstract

We continue our study in \cite{FL} on viscosity solutions to a one-phase free boundary problem for the p(x)p(x)-Laplacian with non-zero right hand side. We first prove that viscosity solutions are locally Lipschitz continuous, which is the optimal regularity for the problem. Then we prove that Lipschitz free boundaries of viscosity solutions are C1,αC^{1,\alpha}. We also present some applications of our results. Moreover, we obtain new results for the operator under consideration that are of independent interest, such as a Harnack inequality.

Keywords

Cite

@article{arxiv.2305.07418,
  title  = {Regularity of Lipschitz free boundaries for a $p(x)$-Laplacian problem with right hand side},
  author = {Fausto Ferrari and Claudia Lederman},
  journal= {arXiv preprint arXiv:2305.07418},
  year   = {2023}
}