Complete geometric invariant study of two classes of quadratic systems

In this article, using affine invariant conditions, we give a complete study for quadratic systems with center and for quadratic Hamiltonian systems. There are two improvements over the results in [30] that studied centers up to GL-invariant, and over the results in [1] that classified Hamilton...

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Bibliographic Details
Main Authors: Joan C. Artes, Jaume Llibre, Nicolae Vulpe
Format: Article
Language:English
Published: Texas State University 2012-01-01
Series:Electronic Journal of Differential Equations
Subjects:
Online Access:http://ejde.math.txstate.edu/Volumes/2012/09/abstr.html