Affine Classification for the Quadratic Vector Fields without the Critical Points at Infinity

Affine Classification for the Quadratic Vector Fields without the Critical Points at Infinity Original Research Article Pages 62-72 G.Q. Chen, Z.J. Liang Close preview | PDF (298 K) | Related articles | Related reference work articles Abstract Abstract In this paper, we prove that the quadratic vector fields without the critical points at infinity have exactly five different affine equivalent classes. Furthermore, for every class, we give also an example belonging to this class.