Rotation of Wedges of Extendability for Tubelike CR Manifolds of CR Dimension 1

摘要

The concept of wedge extendability, as described for example in the work of Tumanov [T] and Baouendi and Rothschild [BaR], has been a major focus of research on CR extension. (See e.g. [BaER] for a general treatment of these and related topics.) We briefly describe this concept. Consider a smooth, generic CR submanifold M of C~n with codimension d and CR dimension n — d.