Séminaire de Systèmes Dynamiques

Geodesics in affine surfaces

par Xavier Buff (Institut de Mathématiques de Toulouse)

Europe/Paris
207 (Bat 1R2)

207

Bat 1R2

Description

The real-time trajectories of a homogeneous holomorphic vector field in ${\mathbb C}^2$ project to geodesics of some affine structure on ${\mathbb CP}^1$. We investigate the asymptotic behavior of such geodesics. 

It is known that the $\omega$-limit set of such a geodesic may be a periodic geodesic, may be a union of connections between singularities or may be dense in the Riemann sphere. We prove the existence of geodesics whose $\omega$-limit set is locally the product of a Cantor set with an interval (such a possibility was already known for geodesics of affine structures on higher genus Riemann surfaces).