{
  "id": "1804.01299",
  "version": "v2",
  "published": "2018-04-04T08:47:02.000Z",
  "updated": "2020-06-13T01:09:05.000Z",
  "title": "Boundary Hölder Regularity for Elliptic Equations",
  "authors": [
    "Yuanyuan Lian",
    "Kai Zhang",
    "Dongsheng Li",
    "Guanghao Hong"
  ],
  "comment": "to appear in Journal de Math\\'ematiques Pures et Appliqu\\'ees",
  "categories": [
    "math.AP"
  ],
  "abstract": "This paper investigates the relation between the boundary geometric properties and the boundary regularity of the solutions of elliptic equations. We prove by a new unified method the pointwise boundary H\\\"{o}lder regularity under proper geometric conditions. \"Unified\" means that our method is applicable for the Laplace equation, linear elliptic equations in divergence and non-divergence form, fully nonlinear elliptic equations, the $p-$Laplace equations and the fractional Laplace equations etc. In addition, these geometric conditions are quite general. In particular, for local equations, the measure of the complement of the domain near the boundary point concerned could be zero. The key observation in the method is that the strong maximum principle implies a decay for the solution, then a scaling argument leads to the H\\\"{o}lder regularity. Moreover, we also give a geometric condition, which guarantees the solvability of the Dirichlet problem for the Laplace equation. The geometric meaning of this condition is more apparent than that of the Wiener criterion.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2020-06-13T01:09:05.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "35B65",
      "35J25",
      "35B50",
      "35R11"
    ],
    "keywords": [
      "boundary hölder regularity",
      "strong maximum principle implies",
      "fractional laplace equations",
      "boundary geometric properties",
      "proper geometric conditions"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}