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math.DG2011
Sub-Riemannian balls in CR Sasakian manifolds
Fabrice Baudoin, Michel Bonnefont
We prove global estimates for the sub-Riemannian distance of CR Sasakian manifolds with non negative horizontal Webster-Tanaka Ricci curvature. In particular, in this setting, larg…
math.DG2011
Curvature-dimension inequalities and Ricci lower bounds for sub-Riemannian manifolds with transverse symmetries
Fabrice Baudoin, Nicola Garofalo
Let $\M$ be a smooth connected manifold endowed with a smooth measure and a smooth locally subelliptic diffusion operator satisfying , and which is symmetric with res…