4 papers
Qualitative planar dynamics with star nodes and homogeneous nonlinearities: beyond Hilbert's problem
Begoña Alarcón, Sofia B. S. D. Castro, Isabel S. Labouriau
This is a full study of the dynamics of polynomial planar vector fields whose linear part is a multiple of the identity and whose nonlinear part is a homogeneous polynomial of arbi…
Synchrony and canards in two coupled FitzHugh--Nagumo equations
Bruno F. F. Gonçalves, Isabel S. Labouriau, Alexandre A. P. Rodrigues
We describe the fast-slow dynamics of two FitzHugh--Nagumo equations coupled symmetrically through the slow equations. We use symmetry arguments to find a non-empty open set of par…
Bifurcations and canards in the FitzHugh-Nagumo system: a tutorial in fast-slow dynamics
Bruno F. F. Gonçalves, Isabel S. Labouriau, Alexandre A. P. Rodrigues
In this article, we study the FitzHugh-Nagumo --fast-slow system where the vector fields associated to the slow/fast equations come from the reduction of the Hodgin-Huxley m…
Transitions of bifurcation diagrams of a forced heteroclinic cycle
Isabel S. Labouriau, Alexandre A. P Rodrigues
A family of periodic perturbations of an attracting robust heteroclinic cycle defined on the two-sphere is studied by reducing the analysis to that of a one-parameter family of map…