On the Structure of Lie Pseudo-Groups

Peter J. Olver
2009 Symmetry, Integrability and Geometry: Methods and Applications  
We compare and contrast two approaches to the structure theory for Lie pseudo-groups, the first due to Cartan, and the second due to the first two authors. We argue that the latter approach offers certain advantages from both a theoretical and practical standpoint.
doi:10.3842/sigma.2009.077 fatcat:ymmpb5h2cbchhewoluyqmtqx3e