In Gasull, Llibre, and Sotomayor. (J. Differential Equations, in press) we studied the number of limit cycles of planar vector fields as in the title. The case where the origin is a node with different eigenvalues, which then resisted our analysis, is solved in this paper. © 1987.
|Journal||Journal of Differential Equations|
|Publication status||Published - 15 Jun 1987|
Gasull, A., Llibre, J., & Sotomayor, J. (1987). Further considerations on the number of limit cycles of vector fields of the form X(v) = Av + f(v) Bv. Journal of Differential Equations, 68, 36-40. https://doi.org/10.1016/0022-0396(87)90185-9