{ "id": "2009.08762", "version": "v1", "published": "2020-09-18T11:59:20.000Z", "updated": "2020-09-18T11:59:20.000Z", "title": "On the analyticity of solutions to non-linear elliptic partial differential systems", "authors": [ "Simon Blatt" ], "categories": [ "math.AP" ], "abstract": "We give an easy proof of the fact that $C^\\infty$ solutions to non-linear elliptic equations of second order $$ \\phi(x, u, D u, D^2 u)=0 $$ are analytic. Following ideas of Kato, the proof uses an inductive estimate for suitable weighted derivatives. We then conclude the proof using Cauchy's method of majorants}.", "revisions": [ { "version": "v1", "updated": "2020-09-18T11:59:20.000Z" } ], "analyses": { "subjects": [ "35A20", "35B65" ], "keywords": [ "non-linear elliptic partial differential systems", "analyticity", "non-linear elliptic equations", "second order", "cauchys method" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }