Abstract
In this chapter we present a number of results from the theory of normal forms. The idea of normal forms consists in finding a polynomial change of variable which “improves” locally a nonlinear system, in order to more easily recognize its dynamics. As we shall see, normal form transformations apply to general classes of nonlinear systems in ℝn near a fixed point, here the origin, by just assuming a certain smoothness of the vector field. In particular, this theory applies to the reduced systems provided by the center manifold theory given in the previous chapter.
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© 2011 EDP Sciences
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Haragus, M., Iooss, G. (2011). Normal Forms. In: Local Bifurcations, Center Manifolds, and Normal Forms in Infinite-Dimensional Dynamical Systems. Universitext. Springer, London. https://doi.org/10.1007/978-0-85729-112-7_3
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DOI: https://doi.org/10.1007/978-0-85729-112-7_3
Publisher Name: Springer, London
Print ISBN: 978-0-85729-111-0
Online ISBN: 978-0-85729-112-7
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