{ "id": "1905.11956", "version": "v1", "published": "2019-05-28T17:25:09.000Z", "updated": "2019-05-28T17:25:09.000Z", "title": "Almost minimizers for the thin obstacle problem", "authors": [ "Seongmin Jeon", "Arshak Petrosyan" ], "categories": [ "math.AP" ], "abstract": "We consider Anzellotti-type almost minimizers for the thin obstacle (or Signorini) problem with zero thin obstacle and establish their $C^{1,\\beta}$ regularity on the either side of the thin manifold, the optimal growth away from the free boundary, the $C^{1,\\gamma}$ regularity of the regular part of the free boundary, as well as a structural theorem for the singular set. The analysis of the free boundary is based on a successful adaptation of energy methods such as a one-parameter family of Weiss-type monotonicity formulas, Almgren-type frequency formula, and the epiperimetric and logarithmic epiperimetric inequalities for the solutions of the thin obstacle problem.", "revisions": [ { "version": "v1", "updated": "2019-05-28T17:25:09.000Z" } ], "analyses": { "subjects": [ "49N60", "35R35" ], "keywords": [ "thin obstacle problem", "free boundary", "minimizers", "optimal growth away", "almgren-type frequency formula" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }