Normal forms for Hopf-Zero singularities with nonconservative nonlinear part

Majid Gazor; Fahimeh Mokhtari; Jan A. Sanders

doi:10.1016/j.jde.2012.11.004.

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arXiv · 1112.2544

Normal forms for Hopf-Zero singularities with nonconservative nonlinear part

Majid Gazor·Fahimeh Mokhtari·Jan A. Sanders

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Abstract

In this paper we are concerned with the simplest normal form computation of a family of Hopf-zero vector fields without a first integral. This family of vector fields are the classical normal forms of a larger family of vector fields with Hopf-Zero singularity. Indeed, these are defined such that this family would be a Lie subalgebra for the space of all classical normal form vector fields with Hopf-Zero singularity. The simplest normal forms and simplest orbital normal forms of this family with non-zero quadratic part are computed. We also obtain the simplest parametric normal form of any non-degenerate perturbation of this family within the Lie subalgebra. The symmetry group of the simplest normal forms are also discussed. This is a part of our results in decomposing the normal forms of Hopf-Zero singular systems into systems with a first integral and nonconservative systems.

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BibTeX RIS

Majid Gazor, Fahimeh Mokhtari, Jan A. Sanders. 2013-09-24. Normal forms for Hopf-Zero singularities with nonconservative nonlinear part. https://doi.org/10.1016/j.jde.2012.11.004.

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