arXiv · math/0310371
Analytic regularity of CR maps into spheres
Abstract
Let $M$ be a connected real-analytic hypersurface in $\C^N$ and $§$ the unit real sphere in $\C^{N'}$, $N'> N\geq 2$. Assume that $M$ does not contain any complex-analytic hypersurface of $\C^N$ and that there exists at least one strongly pseudoconvex point on $M$. We show that any CR map $f\colon M\to §$ of class $C^{N'-N+1}$ extends holomorphically to a neighborhood of $M$ in $\C^N$.
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Nordine Mir. 2003-10-23. Analytic regularity of CR maps into spheres. https://arxiv.org/abs/math/0310371
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