Nilpotent center in a continuous piecewise quadratic polynomial Hamiltonian vector field
Chen, Ting (Guangdong University of Finance and Economics. School of Statistics and Mathematics (China))
Llibre, Jaume (Universitat Autònoma de Barcelona. Departament de Matemàtiques)

Date:	2022
Abstract:	In this paper, we study the global dynamics of continuous piecewise quadratic Hamiltonian systems separated by the straight line x = 0, where these kinds of systems have a nilpotent center at (0, 0), which comes from the combination of two cusps of both Hamiltonian systems. By the Poincaré compactification we classify the global phase portraits of these systems. We must mention that it is extremely rare to find works studying the center-focus problem in piecewise smooth systems with nonelementary singular points as we did here.
Grants:	Agencia Estatal de Investigación PID2019-104658GB-I00 European Commission 777911
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Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Subject:	Nilpotent ; Center ; Hamiltonian ; Phase portrait ; Piecewise smooth system
Published in:	International journal of bifurcation and chaos in applied sciences and engineering, Vol. 32, Issue 8 (June 2022) , art. 2250116, ISSN 1793-6551

DOI: 10.1142/S0218127422501164

Postprint 24 p, 1.3 MB

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