The d-bar-Cauchy problem and nonexistence of Lipschitz Levi-flat hypersurfaces in CPn with n>= 3
Jianguo Cao, Mei-Chi Shaw
Abstract
A Lipschitz hypersurface is a hypersurface which locally is the graph of a Lipschitz function. A Lipschitz (or C1) hypersurface is said to be Levi-flat if it is locally foliated by complex manifolds of complex dimension (n-1). We shall prove that there exist no Lipschitz Levi-flat hypersurfaces in CPn with n >= 3. Our new estimates on the d-bar-Cauchy problems are different from the earlier Siu's integral kernal method.
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