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Lie Groups are Groups that are additionally smooth manifolds such that the multiplication and the inverse maps are smooth.

7 votes
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Termination of Cartan's equivalence method

The Cartan-Kuranishi theorem guarantees that a PDE or EDS can always be completed, by prolongation, to involution. My question is, and this is quite murky to gauge from the literature, whether Cartan' …
Orn Arnaldsson's user avatar