Abstract
Assume that a cubic polynomial differential system in the plane has four invariant straight lines in generic position, i.e., they are not parallel and no more than two straight lines intersect in a point. Then such a differential system only can have $0$, $1$ or $3$ centers.
Citation
Jaume Llibre. "On the centers of cubic polynomial differential systems with four invariant straight lines." Topol. Methods Nonlinear Anal. 55 (2) 387 - 402, 2020. https://doi.org/10.12775/TMNA.2020.004
