3 papers
math.DG2002
Explicit construction of a Chern-Moser connection for CR manifolds of codimension two
Gerd Schmalz, Andrea Spiro
In the present paper we suggest an explicit construction of a Cartan connection for an elliptic or hyperbolic CR manifold M of dimension six and codimension two, i.e. a pair (P, w)…
math.DG1999
The Geometry of Hyperbolic and Elliptic CR-manifolds of codimension two
Gerd Schmalz, Jan Slovak
The general theory of parabolic geometries is applied to the study of the normal Cartan connections for all hyperbolic and elliptic 6-dimensional CR-manifolds of codimension two. T…
math.CV1998
Invariants of elliptic and hyperbolic CR-structures of codimension 2
V. V. Ezhov, A. V. Isaev, G. Schmalz
We reduce CR-structures on smooth elliptic and hyperbolic manifolds of CR-codimension 2 to parallelisms thus solving the problem of global equivalence for such manifolds. The paral…