Contribution to the study of invariant manifolds and the splitting of separatrices of parabolic points

Author

Baldomá, Inmaculada

Director

Fontich, Ernest, 1955-

Date of defense

2001-01-01

Pages

319 p.



Department/Institute

Universitat de Barcelona. Departament de Matemàtica Aplicada i Anàlisi

Abstract

In general, when beginning to explore any scientific field, one focuses on the generic situations; that is, one centers on the behaviours that appear in “most” of the cases encountered in practice. This methodology allows an easier understanding of the problem, since the non-generic (or degenerate) cases are left out (at least a priori) in a first approach. This way, the casuistic is simpler and the general theory can be developed more easily. Although this is a good scientific procedure, the aim of Science is to explain reality in the most complete way possible. So, when the general case has been already described (perhaps not completely, but at least in a good part), one should study the non-generic cases: the exceptions. It should not be forgotten that, in nature, not all the processes follow a general rule. The exceptional cases often provide new types of behaviour. Therefore, a lot can be learned from the exceptions, as much at an intrinsic level (situations that differ from the general qualitative behaviour) as for the new techniques that are developed in order to understand them. In certain contexts, it is generic to encounter degenerate cases. Let us think, for instance, about the case of parametric families, f(mi), which describe different behaviours depending on the value of mi. In this situation, it is generic (that is, it occurs in most of the families) to find values of the parameter f(mi)(0) for which the behaviour of f(mi)(0) is degenerate.

Keywords

Varietats diferenciables; Variedades diferenciables; Differentiable manifolds; Sistemes dinàmics diferenciables; Sistemas dinámicos diferenciales; Differentiable dynamical systems; Sistemes hamiltonians; Sistemas de Hamilton; Hamiltonian systems

Subjects

51 - Matemàtiques

Knowledge Area

Ciències Experimentals i Matemàtiques

Documents

IBB_PhD_THESIS.pdf

35.47Mb

 

Rights

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