New Trends in Sub-Riemannian Geometry

Derived from a focused session in Grenoble, these proceedings explore sub-Riemannian geometry—extending classical ideas by defining metrics on select tangent directions. They reveal fresh links with sub-elliptic operators, spectral theory, holonomy, and the intricacies of the exponential map.
This volume contains the proceedings of the AMS-EMS-SMF Special Session on Sub-Riemannian Geometry and Interactions, held from July 18-20, 2022, at the Universite de Grenoble-Alpes, Grenoble, France. Sub-Riemannian geometry is a generalization of Riemannian one, where a smooth metric is defined only on a preferred subset of tangent directions. Under the so-called Hormander condition, all points are connected by finite-length curves, giving rise to a well-defined metric space. Sub-Riemannian geometry is nowadays a lively branch of mathematics, connected with probability, harmonic and complex analysis, subelliptic PDEs, geometric measure theory, optimal transport, calculus of variations, and potential analysis. The articles in this volume present some developments of a broad range of topics in sub-Riemannian geometry, including the theory of sub-elliptic operators, holonomy, spectral theory, and the geometry of the exponential map.

Contributor: Fabrice Baudoin (Edited by), Luca Rizzi (Edited by)

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