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math.DG2000
Differential invariants and curved Bernstein-Gelfand-Gelfand sequences
David M. J. Calderbank, Tammo Diemer
We give a simple construction of the Bernstein-Gelfand-Gelfand sequences of natural differential operators on a manifold equipped with a parabolic geometry. This method permits us…
math.DG2000
Two dimensional Einstein-Weyl structures
David M. J. Calderbank
All local solutions of the two dimensional Einstein-Weyl equations are found, and related to the compact examples which I obtained in "Moebius structures and two dimensional Einste…