Título inglés |
Psi-series of quadratic vector fields on the plane. |
Título español |
Series psi de campos vectoriales cuadráticos en el plano. |
Autor/es |
Delshams, Amadeu ; Mir, Arnau |
Organización |
Dep. Mat. Apl. I Univ. Politèc. Catalunya, Barcelona, España;Dep. Mat. Informàt. Univ. Illes Balears, Palma de Mallorca, España |
Revista |
0214-1493 |
Publicación |
1997, 41 (1): 101-125, 21 Ref. |
Tipo de documento |
articulo |
Idioma |
Inglés |
Resumen inglés |
Psi-series (i.e., logarithmic series) for the solutions of quadratic vector fields on the plane are considered. Its existence and convergence is studied, and an algorithm for the location of logarithmic
singularities is developed. Moreover, the relationship between psi-series and non-integrability is stressed and in particular it is proved that quadratic systems with psi-series that are not Laurent series do not have an algebraic first integral. Besides, a criterion about non-existence of an analytic first integral is given. |
Clasificación UNESCO |
120219 |
Palabras clave español |
Formas cuadráticas ; Campos vectoriales ; Sistemas diferenciales ; Series sumables ; Función logarítmica |
Código MathReviews |
MR1461645 |
Acceso al artículo completo |