Remarks on vector fields with simply connected trajectories and their associated derivations
- Bustinduy, Alvaro 1
- Giraldo, Luis
-
1
Universidad Nebrija
info
ISSN: 1578-7303, 1579-1505
Año de publicación: 2019
Volumen: 113
Número: 4
Páginas: 4119-4126
Tipo: Artículo
Otras publicaciones en: Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas
Resumen
Let X be a polynomial vector field on C2 with at most isolated zeros and whose trajectories are all simply connected. Let us suppose that there is a polynomial P∈ C[x, y] such that (i) dP(X) = 1 or (ii) dP(X) = a· P, with a∈ C∗. In (Bustinduy and Giraldo, in Adv Math 285:1339–1357, 2015; Bustinduy and Giraldo, in J Differ Equ 264:3933–3939, 2018) the authors determined X and P, up to an algebraic change of coordinates, when P∈ C[x, y] is primitive. In this note, we extend these results for an arbitrary P. Finally, as an application, we show that if a polynomial vector field X on C2 with at most isolated zeros has all its trajectories simply connected and there exist P∈ C[x, y] and n∈ N+ such that Xn(P) = 0 and Xn - 1(P) ≠ 0 or Xn + 1(P) = a· Xn(P) with a∈ C∗, X is complete and present some questions on the study of derivations whose image is a Mathieu subspace.
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