A normal form for small CR-deformations of the standard CR-structure on the (2n+1)-sphere is presented. The space of normal forms is parameterized by a single function on the sphere. For n>1, the normal form is used to obtain explicit embeddings into $ℂ^{n+1}$. For n=1, the cohomological obstruction to embeddability is identified.
CONTENTS Introduction.........................................................................................................5 1. Conjugate norms in ℝⁿ..................................................................................10 2. Conjugate norms in ℂⁿ..................................................................................16 3. Extremal properties of norms F(f,·) in pluripotential theory............................29 4. Biholomorphic inequivalence of some convex circular domains....................35 5. The complex method of interpolation and conjugate norms in ℂⁿ.................43 6. On tensor products $ℝⁿ ⊗ ℝ^{k}$ and $ℂⁿ ⊗ ℂ^{k}$....................................54 7. The complex interpolation of a complexification of a real Hilbert space.........62 References........................................................................................................65
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