Structurally unstable quadratic vector fields of codimension two: families possessing a finite saddle-node and an infinite saddle-node

by Joan Artés, Marcos Mota, Alex Rezende
Published 2021-04-01

Global configurations of singularities for quadratic differential systems with exactly three finite singularities of total multiplicity four

by Joan Artés, Jaume Llibre, Dana Schlomiuk, Nicolae Vulpe
Published 2015-08-01

Global configurations of singularities for quadratic differential systems with exactly two finite singularities of total multiplicity four

by Joan Artés, Jaume Llibre, Alex Rezende, Dana Schlomiuk, Nicolae Vulpe
Published 2014-12-01