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Planar phase portraits and generic bifurcations of reversible vector fields

Grant number: 07/04307-2
Support Opportunities:Scholarships abroad - Research
Effective date (Start): October 07, 2007
Effective date (End): November 23, 2007
Field of knowledge:Physical Sciences and Mathematics - Mathematics - Geometry and Topology
Principal Investigator:Claudio Aguinaldo Buzzi
Grantee:Claudio Aguinaldo Buzzi
Host Investigator: Jaume Llibre
Host Institution: Instituto de Biociências, Letras e Ciências Exatas (IBILCE). Universidade Estadual Paulista (UNESP). Campus de São José do Rio Preto. São José do Rio Preto , SP, Brazil
Research place: Universitat Autònoma de Barcelona (UAB), Spain  


First part: study of the generic bifurcation of codimension one at the class reversible vector field of type (2n+1,n). More precisely, we intend to investigate the occurrence of families of periodic orbits and/or homo/heteroclinic orbits, by using the techniques of Normal Forms and Liapunov-Schmidt reduction. In sequence we will consider perturbation of such systems via KAM Theory and we will study the persistence of such minimal sets. Second part: study of the possible global phase portraits of a system of the form X(x)= L(x) + g(x), where L is its linear part and g is a homogeneous polynomial planar vector field of degree three. Moreover, we will assume that the origin is an elliptical singular point of X and X is reversible of type (2,1). (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
BUZZI, CLAUDIO A.; LLIBRE, JAUME; MEDRADO, JOAO C.; TORREGROSA, JOAN. Bifurcation of limit cycles from a centre in R-4 in resonance 1:N. DYNAMICAL SYSTEMS-AN INTERNATIONAL JOURNAL, v. 24, n. 1, p. 123-137, . (07/04307-2)

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