The sphere and the cut locus at a tangency point in two-dimensional almost-Riemannian geometry - Archive ouverte HAL
Pré-Publication, Document De Travail Année : 2010

The sphere and the cut locus at a tangency point in two-dimensional almost-Riemannian geometry

Résumé

We study the tangential case in 2-dimensional almost-Riemannian geometry. We analyse the connection with the Martinet case in sub-Riemannian geometry. We compute estimations of the exponential map which allow us to describe the conjugate locus and the cut locus at a tangency point. We prove that this last one generically accumulates at the tangency point as an asymmetric cusp whose branches are separated by the singular set.
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Dates et versions

hal-00517193 , version 1 (13-09-2010)

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Bernard Bonnard, Grégoire Charlot, Roberta Ghezzi, Gabriel Janin. The sphere and the cut locus at a tangency point in two-dimensional almost-Riemannian geometry. 2010. ⟨hal-00517193⟩
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