Regularization around a generic codimension one fold-fold singularity

Autor(es)

Bonet-Reves, Carles ^[1] ; Larrosa, Juliana ^[2] ; M-Seara, Tere ^[1]

Afiliação do(s) autor(es)

^[1] Univ Politecn Cataluna, Dept Matemat, BGSMATH, Diagonal 647, E-08028 Barcelona - Spain

^[2] Univ Fed Santa Maria, Dept Matemat, Ave Roraima 1000, BR-97195000 Santa Maria, RS - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Differential Equations; v. 265, n. 5, p. 1761-1838, SEP 5 2018.
• Citações Web of Science: 1

Resumo

This paper is devoted to study the generic fold-fold singularity of Filippov systems on the plane, its unfoldings and its Sotomayor-Teixeira regularization. We work with general Filippov systems and provide the bifurcation diagrams of the fold-fold singularity and their unfoldings, proving that, under some generic conditions, is a codimension one embedded submanifold of the set of all Filippov systems. The regularization of this singularity is studied and its bifurcation diagram is shown. In the visible-invisible case, the use of geometric singular perturbation theory has been useful to give the complete diagram of the unfolding, specially the appearance and disappearance of periodic orbits that are not present in the Filippov vector field. In the case of a linear regularization, we prove that the regularized system is equivalent to a general slow-fast system studied by Krupa and Szmolyan {[}10]. (C) 2018 Elsevier Inc. All rights reserved. (AU)

• Processo FAPESP: 11/22529-8 - Bifurcações de Famílias a três parâmetros de sistemas planares de Filippov
• Beneficiário: Juliana Fernandes Larrosa
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 14/13970-0 - Regularização de sistemas planares de Filippov próximo a singularidades de codimensão um
• Beneficiário: Juliana Fernandes Larrosa
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado