{ "id": "math/0010197", "version": "v1", "published": "2000-10-20T09:32:13.000Z", "updated": "2000-10-20T09:32:13.000Z", "title": "On the existence of polynomial first integrals of quadratic homogeneous systems of ordinary differential equations", "authors": [ "Alexei Tsygvintsev" ], "comment": "9 pages. to appear in . Phys. A: Math. Gen. 33, 2000", "doi": "10.1088/0305-4470/34/11/311", "categories": [ "math.DS" ], "abstract": "We consider systems of ordinary differential equations with quadratic homogeneous right hand side. We give a new simple proof of a result already obtained in [8,10] which gives the necessary conditions for the existence of polynomial first integrals. The necessary conditions for the existence of a polynomial symmetry field are given. It is proved that an arbitrary homogeneous first integral of a given degree is a linear combination of a fixed set of polynomials.", "revisions": [ { "version": "v1", "updated": "2000-10-20T09:32:13.000Z" } ], "analyses": { "subjects": [ "37K10" ], "keywords": [ "ordinary differential equations", "polynomial first integrals", "quadratic homogeneous systems", "quadratic homogeneous right hand side", "necessary conditions" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 9, "language": "en", "license": "arXiv", "status": "editable" } } }