Differential invariants and curved Bernstein-Gelfand-Gelfand sequences
The authors present a simple construction of the Bernstein-Gelfand-Gelfand sequences of natural differential operators on a manifold with parabolic geometry. This method also allows to define the additional structure of a bilinear differential ``cup product'' satisfying the Leibniz rule up to curvature terms. The construction is illustrated in the case of conformal differential geometry.
scientific article; zbMATH DE number 1669675
scientific article