01:02:44
publiée le 18 juin 2026
Des oscillations de Fourier aux ondes gravitationnelles : la théorie analytique de la propagation de l'information
De Ronald Coifman
Excess and tangents of sub-Riemannian geodesics
Apparaît dans la collection : Journée sous-riemannienne 2017
We present some recent results on the regularity problem of sub-Riemannian length minimizing curves. This is a joint work with A. Pigati and D. Vittone. After introducing the notion of excess for a horizontal curve, we show that at any point of a length minimizing curve excess is infinitesimal at some sequence of scales. This implies the existence of a linear tangent. We also discuss other results related to excess.
