{ "id": "1706.08185", "version": "v1", "published": "2017-06-25T23:03:59.000Z", "updated": "2017-06-25T23:03:59.000Z", "title": "Unfolding of nilpotent equilibria of degree 4 in Hamiltonian systems with 2 degrees of freedom", "authors": [ "Giannis Moutsinas" ], "categories": [ "math.DS" ], "abstract": "We consider Hamiltonian systems of two degrees of freedome having a nilpotent equilibrium point with only one eigenvector. We provide the universal unfolding of such equilibrium, provided a non-degeneracy condition holds. We show that the only co-dimension 1 bifurcations that happen in the unfolding are of two types: the normally hyperbolic or elliptic centre-saddle bifurcations and the supercritical Hamiltonian-Hopf bifurcation.", "revisions": [ { "version": "v1", "updated": "2017-06-25T23:03:59.000Z" } ], "analyses": { "keywords": [ "hamiltonian systems", "nilpotent equilibrium point", "elliptic centre-saddle bifurcations", "non-degeneracy condition holds", "supercritical hamiltonian-hopf bifurcation" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }