Foliations and Polynomial Diffeomorphisms of $\mathbb{R}^{3}$

Details Foliations and Polynomial Diffeomorphisms of $\mathbb{R}^{3}$ Foliations and Polynomial Diffeomorphisms of $\mathbb{R}^{3}$

2006-07-17

arxiv.org/abs/math/0607393v1

Mathematics

Dynamical Systems

13 pages and 3 figures

Scientific paper

Let $Y=(f,g,h):\mathbb{R}^{3} \to \mathbb{R}^{3}$ be a $C^{2}$ map and let $\spec(Y)$ denote the set of eigenvalues of the derivative $DY_p$, when $p$ varies in $\mathbb{R}^3$. We begin proving that if, for some $\epsilon>0,$ $\spec(Y)\cap (-\epsilon,\epsilon)=\emptyset,$ then the foliation $\mathcal{F}(k),$ with $k\in \{f,g,h\},$ made up by the level surfaces $\{k={\rm constant}\},$ consists just of planes. As a consequence, we prove a bijectivity result related to the three-dimensional case of Jelonek's Jacobian Conjecture for polynomial maps of $\mathbb{R}^n.$

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