{ "id": "1204.5893", "version": "v1", "published": "2012-04-26T11:52:20.000Z", "updated": "2012-04-26T11:52:20.000Z", "title": "Boundaries of instability zones for symplectic twist maps", "authors": [ "Marie-Claude Arnaud" ], "categories": [ "math.DS" ], "abstract": "We construct a $C^2$ symplectic twist map f of the annulus that has an essential invariant curve C such that: - C is not differentiable; - the dynamics of f restricted to C is conjugated to the one of a Denjoy counter-example; - C is at the boundary of an instability zone for f.", "revisions": [ { "version": "v1", "updated": "2012-04-26T11:52:20.000Z" } ], "analyses": { "keywords": [ "symplectic twist map", "instability zone", "essential invariant curve", "denjoy counter-example" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2012arXiv1204.5893A" } } }