{ "id": "1711.04486", "version": "v1", "published": "2017-11-13T09:22:47.000Z", "updated": "2017-11-13T09:22:47.000Z", "title": "Local energy weak solutions for the Navier-Stokes equations in the half-space", "authors": [ "Yasunori Maekawa", "Hideyuki Miura", "Christophe Prange" ], "comment": "59 pages", "categories": [ "math.AP" ], "abstract": "The purpose of this paper is to prove the existence of global in time local energy weak solutions to the Navier-Stokes equations in the half-space $\\mathbb R^3_+$. Such solutions are sometimes called Lemari\\'e-Rieusset solutions in the whole space $\\mathbb R^3$. The main tool in our work is an explicit representation formula for the pressure, which is decomposed into a Helmholtz-Leray part and a harmonic part due to the boundary. We also explain how our result enables to reprove the blow-up of the scale-critical $L^3(\\mathbb R^3_+)$ norm obtained by Barker and Seregin for solutions developing a singularity in finite time.", "revisions": [ { "version": "v1", "updated": "2017-11-13T09:22:47.000Z" } ], "analyses": { "subjects": [ "35A01", "35B44", "35B45", "35D30", "35G61", "35Q30", "76D03", "76D05" ], "keywords": [ "navier-stokes equations", "half-space", "time local energy weak solutions", "explicit representation formula", "finite time" ], "note": { "typesetting": "TeX", "pages": 59, "language": "en", "license": "arXiv", "status": "editable" } } }