Llibre de bons amonestaments
Turmeda, Anselm, 1352/5-post. 1423
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Giné, Jaume; Grau Montaña, Maite; Llibre, Jaume (IOP Publishing, 2013)Recently some extensions of the classical Darboux integrability theory to autonomous and non-autonomous polynomial vector fields were completed. The classical Darboux integrability theory and its recent extensions are based ...
The problem of distinguishing between a center and a focus for nilpotent and degenerate analytic systems Giacomini, Héctor; Giné, Jaume; Llibre, Jaume (Elsevier, 2006)In this work we study the centers of planar analytic vector fields which are limit of linear type centers. It is proved that all the nilpotent centers are limit of linear type centers and consequently the Poincaré–Liapunov ...
Grau Montaña, Maite; Llibre, Jaume (Elsevier, 2015)We consider a planar autonomous real analytic differential system with a monodromic singular point p. We deal with the center problem for the singular point p. Our aim is to highlight some relations between the divergence ...