Departamento de Álgebra, Facultad de Matemáticas, Universidad Complutense de Madrid, Ciudad Universitaria 28040 Madrid, Spain
Abstract:
We prove that a complete polynomial vector field on has at most one zero, and analyze the possible cases of those with exactly one which is not of Poincaré-Dulac type. We also obtain the possible nonzero first jet singularities of the foliation at infinity and the nongenericity of completeness. Connections with the Jacobian Conjecture are established.