{ "id": "math/9807090", "version": "v1", "published": "1998-07-17T00:46:53.000Z", "updated": "1998-07-17T00:46:53.000Z", "title": "Persistence of invariant manifolds for nonlinear PDEs", "authors": [ "Don A. Jones", "Steve Shkoller" ], "comment": "LaTeX2E, 32 pages, to appear in Studies in Applied Mathematics", "categories": [ "math.AP", "math.DS", "math.NA" ], "abstract": "We prove that under certain stability and smoothing properties of the semi-groups generated by the partial differential equations that we consider, manifolds left invariant by these flows persist under $C^1$ perturbation. In particular, we extend well known finite-dimensional results to the setting of an infinite-dimensional Hilbert manifold with a semi-group that leaves a submanifold invariant. We then study the persistence of global unstable manifolds of hyperbolic fixed-points, and as an application consider the two-dimensional Navier-Stokes equation under a fully discrete approximation. Finally, we apply our theory to the persistence of inertial manifolds for those PDEs which possess them. te", "revisions": [ { "version": "v1", "updated": "1998-07-17T00:46:53.000Z" } ], "analyses": { "subjects": [ "35K50", "58B99", "76D05" ], "keywords": [ "nonlinear pdes", "invariant manifolds", "persistence", "two-dimensional navier-stokes equation", "infinite-dimensional hilbert manifold" ], "note": { "typesetting": "LaTeX", "pages": 32, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "1998math......7090J" } } }