Cartan Geometries and their Symmetries

Cartan Geometries and their Symmetries: A Lie Algebroid Approach
Atlantis Press | Geometry & Topology | June 21, 2016 | ISBN-10: 9462391912 | 290 pages | pdf | 3.01 mb

Authors: Crampin, Mike, Saunders, David
Expounds a new approach to the theory of Cartan connections as path connections on a certain class of Lie groupoids, or as infinitesimal connections on corresponding Lie algebroids
It contains a comprehensive account of the symmetries of Cartan geometries
Based on these ideas it extends Cartan's theory of a single ordinary differential equation to cover systems of such equations

In this book we first review the ideas of Lie groupoid and Lie algebroid, and the associated concepts of connection. We next consider Lie groupoids of fibre morphisms of a fibre bundle, and the connections on such groupoids together with their symmetries. We also see how the infinitesimal approach, using Lie algebroids rather than Lie groupoids, and in particular using Lie algebroids of vector fields along the projection of the fibre bundle, may be of benefit.

We then introduce Cartan geometries, together with a number of tools we shall use to study them. We take, as particular examples, the four classical types of geometry: affine, projective, Riemannian and conformal geometry. We also see how our approach can start to fit into a more general theory. Finally, we specialize to the geometries (affine and projective) associated with path spaces and geodesics, and consider their symmetries and other properties.

Differential Geometry

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