On the Geometry of Bäcklund Transformations
نویسنده
چکیده
The geometry of an admissible Bäcklund transformation for an exterior differential system is described by an admissible Cartan connection for a geometric structure on a tower with infinite–dimensional skeleton which is the universal prolongation of a |1|–graded semi-simple Lie algebra. 2000 MSC: 14M17,53C05,53C10,53C30, 58J70,58J72,58A15.
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