A certain family of homogeneous spaces is investigated. Basic invariant operators for each of these structures are presented and some analogies to Levi-Civita connections of Riemannian geometry are pointed out.
@article{701786, title = {Aspects of parabolic invariant theory}, booktitle = {Proceedings of the 18th Winter School "Geometry and Physics"}, series = {GDML\_Books}, publisher = {Circolo Matematico di Palermo}, address = {Palermo}, year = {1999}, pages = {25-47}, mrnumber = {MR1692257}, zbl = {0967.53033}, url = {http://dml.mathdoc.fr/item/701786} }
Gover, Rod A. Aspects of parabolic invariant theory, dans Proceedings of the 18th Winter School "Geometry and Physics", GDML_Books, (1999), pp. 25-47. http://gdmltest.u-ga.fr/item/701786/