RT Journal Article T1 Local phase portraits through the Newton diagram of a vector field A1 Algaba Durán, Antonio A1 Checa Camacho, Isabel A1 García García, Cristóbal A1 Reyes Columé, Manuel K1 Ecuaciones diferenciales AB The Newton diagram and, in particular, the lowest-degree quasi-homogeneous termsof an analytic planar vector field allow us to determine the existence of characteristic orbits and separatrices of an isolated singular point. We give an easy algorithm for obtaining the local phase portrait near the origin of a bi-dimensional differential system and we provide several examples. PB Springer SN 10.1007/s10114-015-3663-4 SN 1439-8516 SN 1439-7617 (electrónico) YR 2015 FD 2015-06 LK https://hdl.handle.net/10272/25454 UL https://hdl.handle.net/10272/25454 LA eng NO Algaba, A., Checa, I., García, C., & Reyes, M. (2015). Local phase portraits through the Newton diagram of a vector field. Acta Mathematica Sinica, English Series, 31(6), 1015–1034. https://doi.org/10.1007/s10114-015-3663-4 NO Supported by Ministerio de Ciencia y Tecnología, Plan Nacional I+D+Ico-financed with FEDER funds, in the frame of the projectsMTM2010-20907-C02-02, and byConsejería de Educación y Ciencia de la Junta deAndalucía (FQM-276 and P08-FQM-03770) DS Repositorio Institucional de la Universidad de Huelva RD 15 jun 2026