{ "id": "2007.11989", "version": "v1", "published": "2020-07-23T13:02:16.000Z", "updated": "2020-07-23T13:02:16.000Z", "title": "Existence of a global weak solution for a reaction-diffusion problem with membrane conditions", "authors": [ "Giorgia Ciavolella", "BenoƮt Perthame" ], "categories": [ "math.AP" ], "abstract": "Several problems, issued from physics or biology, lead to parabolic equations set in two sub-domains separated by a membrane. The corresponding boundary conditions are compatible with mass conservation and are called the Kedem-Katchalsky conditions. In these models, written as reaction-diffusion systems, the reaction terms have a quadratic behaviour. We adapt the $L^1$ theory developed by M. Pierre and collaborators to these boundary conditions and prove the existence of weak solutions when the initial data has $L^1$ regularity.", "revisions": [ { "version": "v1", "updated": "2020-07-23T13:02:16.000Z" } ], "analyses": { "subjects": [ "35K57", "35D30", "35Q92" ], "keywords": [ "global weak solution", "reaction-diffusion problem", "membrane conditions", "parabolic equations set", "reaction terms" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }