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math.DG2009★ 2 cited
Rank 2 distributions of Monge equations: symmetries, equivalences, extensions
Ian Anderson, Boris Kruglikov
By developing the Tanaka theory for rank 2 distributions, we completely classify classical Monge equations having maximal finite-dimensional symmetry algebras with fixed (albeit ar…
math.DG2009★ 6 cited
Involutivity of field equations
Boris Kruglikov
We prove involutivity of Einstein, Einstein-Maxwell and other field equations by calculating the Spencer cohomology of these systems. Relation with Cartan method is traced in detai…