Smooth linearization of centres

Massimo Villarini

Displaying similar documents to “Smooth linearization of centres”

Instability of equilibria in dimension three

Marco Brunella (1998)

Annales de l'institut Fourier

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In this paper we show that if $v$ is an analytic vector field on $ℝ^{3}$ having an isolated singular point at 0, then there exists a trajectory of $v$ which converges to 0 in the past or in the future. The proof is based on certain results concerning desingularizaton of vector fields in dimension three and on index-type arguments .

Stable planar polynomial vector fields.

Jorge Sotomayor (1985)

Revista Matemática Iberoamericana

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Electromagnetic topology analysis to coupling wires enclosed in cavities with apertures.

Li, Ying, Luo, Jianshu, Ni, Guyan, Shi, Jiyuan (2010)

Mathematical Problems in Engineering

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The solution of a singular integral equation with some applications in potential theory.

Shawagfeh, N.T. (1998)

International Journal of Mathematics and Mathematical Sciences

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Singularities of vector fields

Floris Takens (1974)

Publications Mathématiques de l'IHÉS

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Minimal surfaces in pseudohermitian geometry

Jih-Hsin Cheng, Jenn-Fang Hwang, Andrea Malchiodi, Paul Yang (2005)

Annali della Scuola Normale Superiore di Pisa - Classe di Scienze

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We consider surfaces immersed in three-dimensional pseudohermitian manifolds. We define the notion of (p-)mean curvature and of the associated (p-)minimal surfaces, extending some concepts previously given for the (flat) Heisenberg group. We interpret the p-mean curvature not only as the tangential sublaplacian of a defining function, but also as the curvature of a characteristic curve, and as a quantity in terms of calibration geometry. As a differential equation, the p-minimal surface...

A generalization of the residue formula.

Estrada, Ricardo (2002)

Bulletin of the Malaysian Mathematical Sciences Society. Second Series

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An example of a non-degenerate precession possessing two distinct pairs of axes

Giancarlo Cantarelli, Corrado Risito (2003)

Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni

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In the present paper we provide an interesting example of a non-degenerate precession possessing two distinct pairs $(p, f)$ , $(p^{'}, f^{'})$ of axes of precession and figure. Thus the problem arises of the existence of classes of precessions possessing a unique axis of precession and a unique axis of figure. In the fourth section we show that the class of non-degenerate regular precessions enjoys this property.