Generalized Dolbeault sequences in parabolic geometry

Details Generalized Dolbeault sequences in parabolic geometry Generalized Dolbeault sequences in parabolic geometry

2007-09-29

arxiv.org/abs/0710.0093v2

Mathematics

Differential Geometry

Scientific paper

In this paper, we show the existence of a sequence of invariant differential operators on a particular homogeneous model $G/P$ of a Cartan geometry. The first operator in this sequence can be locally identified with the Dirac operator in $k$ Clifford variables, $D=(D_1,..., D_k)$, where $D_i=\sum_j e_j\cdot \partial_{ij}: C^\infty((\R^n)^k,\S)\to C^\infty((\R^n)^k,\S)$. We describe the structure of these sequences in case the dimension $n$ is odd. It follows from the construction that all these operators are invariant with respect to the action of the group $G$. These results are obtained by constructing homomorphisms of generalized Verma modules, what are purely algebraic objects.

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