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Qualitative theory and bifurcations of piecewise smooth vector fields

Grant number: 14/02134-7
Support Opportunities:Regular Research Grants
Duration: May 01, 2014 - April 30, 2016
Field of knowledge:Physical Sciences and Mathematics - Mathematics - Geometry and Topology
Principal Investigator:Tiago de Carvalho
Grantee:Tiago de Carvalho
Host Institution: Faculdade de Ciências (FC). Universidade Estadual Paulista (UNESP). Campus de Bauru. Bauru , SP, Brazil

Abstract

In this research project we will study aspects of the Ordinary Differential Equations Qualitative Theory. Specifically speaking, we will study piecewise smooth vector fields. Among the main challenges encountered when studying such systems include the difficulty in establishing the codimension of singularities. In this project we intend to find the codimension of singularities of piecewise smooth vector fields and also get results on minimal sets and bifurcations of such systems. We emphasize that the line of study proposed here is linked to issues already covered in articles published or submitted for publication by the researcher in recent years. Thus, we expect that during the this project papers can be written and published. (AU)

Articles published in Agência FAPESP Newsletter about the research grant:
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Scientific publications (14)
(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)
DE CARVALHO, TIAGO. On the Closing Lemma for planar piecewise smooth vector fields. JOURNAL DE MATHEMATIQUES PURES ET APPLIQUEES, v. 106, n. 6, p. 1174-1185, . (14/02134-7)
CARVALHO, TIAGO; EUZEBIO, RODRIGO D.; TEIXEIRA, MARCO ANTONTO; TONON, DURVAL JOSE. Birth of limit cycles from a 3D triangular center of a piecewise smooth vector field. IMA JOURNAL OF APPLIED MATHEMATICS, v. 82, n. 3, p. 561-578, . (14/18508-3, 13/25828-1, 14/02134-7)
DE CARVALHO, TIAGO; TONON, DURVAL JOSE. Structural stability and normal forms of piecewise smooth vector fields on R-3. PUBLICATIONES MATHEMATICAE-DEBRECEN, v. 86, n. 3-4, p. 255-274, . (12/00481-6, 14/02134-7)
BUZZI, CLAUDIO A.; CARVALHO, TIAGO; EUZEBIO, RODRIGO D.. ON POINCARE BENDIXSON THEOREM AND NON-TRIVIAL MINIMAL SETS IN PLANAR NONSMOOTH VECTOR FIELDS. PUBLICACIONS MATEMATIQUES, v. 62, n. 1, p. 113-131, . (13/24541-0, 14/18508-3, 13/25828-1, 14/02134-7)
BUZZI, CLAUDIO A.; DE CARVALHO, TIAGO; EUZEBIO, RODRIGO D.. Chaotic planar piecewise smooth vector fields with non-trivial minimal sets. Ergodic Theory and Dynamical Systems, v. 36, n. 2, p. 458-469, . (12/00481-6, 14/02134-7, 10/18015-6)
CRISTIANO, RONY; PAGANO, DANIEL J.; CARVALHO, TIAGO; TONON, DURVAL J.. Bifurcations at a degenerate two-fold singularity and crossing limit cycles. Journal of Differential Equations, v. 268, n. 1, p. 115-140, . (17/00883-0, 14/02134-7)
DE CARVALHO, TIAGO; LLIBRE, JAUME; TONON, DURVAL JOSE. Limit cycles of discontinuous piecewise polynomial vector fields. Journal of Mathematical Analysis and Applications, v. 449, n. 1, p. 572-579, . (14/02134-7)
CARVALHO, TIAGO; TEIXEIRA, MARCO ANTONIO; TONON, DURVAL JOSE. Asymptotic stability and bifurcations of 3D piecewise smooth vector fields. ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND PHYSIK, v. 67, n. 2, . (12/18780-0, 14/02134-7, 12/00481-6)
BUZZI, CLAUDIO A.; DE CARVALHO, TIAGO; EUZEBIO, RODRIGO D.. Chaotic planar piecewise smooth vector fields with non-trivial minimal sets. Ergodic Theory and Dynamical Systems, v. 36, p. 12-pg., . (14/02134-7, 12/00481-6, 10/18015-6)
CARVALHO, TIAGO; TEIXEIRA, MARCO A.. On piecewise smooth vector fields tangent to nested tori. Journal of Differential Equations, v. 261, n. 7, p. 4008-4029, . (12/18780-0, 14/02134-7)
DE CARVALHO, TIAGO; EUZEBIO, RODRIGO DONIZETE; LLIBRE, JAUME; TONON, DURVAL JOSE. DETECTING PERIODIC ORBITS IN SOME 3D CHAOTIC QUADRATIC POLYNOMIAL DIFFERENTIAL SYSTEMS. DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS-SERIES B, v. 21, n. 1, p. 1-11, . (13/25828-1, 14/02134-7)
CARVALHO, TIAGO; LLIBRE, JAUME. On the Periodic Solutions of the Five-Dimensional Lorenz Equation Modeling Coupled Rosby Waves and Gravity Waves. INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS, v. 27, n. 6, . (14/02134-7)
BRAGA, DENIS DE CARVALHO; CARVALHO, TIAGO; MELLO, LUIS FERNANDO. Limit cycles bifurcating from discontinuous centres. IMA JOURNAL OF APPLIED MATHEMATICS, v. 82, n. 4, p. 849-863, . (14/02134-7)
CRISTIANO, RONY; CARVALHO, TIAGO; TONON, DURVAL J.; PAGANO, DANIEL J.. Hopf and Homoclinic bifurcations on the sliding vector field of switching systems in R-3: A case study in power electronics. PHYSICA D-NONLINEAR PHENOMENA, v. 347, p. 12-20, . (14/02134-7)

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