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math.CV2022
CR embeddings of CR manifolds
M. G. Cowling, M. Ganji, A. Ottazzi +1
We improve results of Baouendi, Rothschild and Treves and of Hill and Nacinovich by finding a much weaker sufficient condition for a CR manifold of type to admit a local CR…
math.CV2018
On a criterion for local embeddability of 3-dimensional CR-structures
Masoud Ganji, Gerd Schmalz
We introduce a CR-invariant class of Lorentzian metrics on a circle bundle over a 3-dimensional CR-structure, which we call quasi-Fefferman metrics. These metrics generalise the Fe…