{ "id": "1702.03746", "version": "v1", "published": "2017-02-13T12:46:50.000Z", "updated": "2017-02-13T12:46:50.000Z", "title": "Nonlinear diffusion in transparent media: the resolvent equation", "authors": [ "Lorenzo Giacomelli", "Salvador Moll", "Francesco Petitta" ], "categories": [ "math.AP" ], "abstract": "We consider the partial differential equation $$ u-f={\\rm div}\\left(u^m\\frac{\\nabla u}{|\\nabla u|}\\right) $$ with $f$ nonnegative and bounded and $m\\in\\mathbb{R}$. We prove existence and uniqueness of solutions for both the Dirichlet problem (with bounded and nonnegative {boundary datum}) and the homogeneous Neumann problem. Solutions, which a priori belong to a space of truncated bounded variation functions, are shown to have zero jump part with respect to the ${\\mathcal H}^{N-1}$ Haussdorff measure. Results and proofs extend to more general nonlinearities.", "revisions": [ { "version": "v1", "updated": "2017-02-13T12:46:50.000Z" } ], "analyses": { "subjects": [ "35J25", "35J60", "35B51", "35B99" ], "keywords": [ "resolvent equation", "transparent media", "nonlinear diffusion", "partial differential equation", "zero jump part" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }