{ "id": "1011.1453", "version": "v1", "published": "2010-11-05T16:41:01.000Z", "updated": "2010-11-05T16:41:01.000Z", "title": "On evaluation of the topological degree of the Poincare map in some singular situations", "authors": [ "Irina Martynova" ], "comment": "9 pages, 2 figures", "categories": [ "math.DS" ], "abstract": "In the paper we develop a method to evaluate the topological degree of the Poincare map of the mathematical model of narrow lagoon subject to a T-periodic forcing. Using the method developved we arrive to the conditions for the parameteres that guarantee the existence of T-periodic solutions in a given region. The difficulty towards implementing this plan is caused by the fact that the direct employing of M.A. Krasnoselski-A.I. Perov irreversibility approach leads to a singular vector field.", "revisions": [ { "version": "v1", "updated": "2010-11-05T16:41:01.000Z" } ], "analyses": { "subjects": [ "34C05" ], "keywords": [ "poincare map", "topological degree", "singular situations", "evaluation", "singular vector field" ], "note": { "typesetting": "TeX", "pages": 9, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2010arXiv1011.1453M" } } }