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HYPOELLIPTICITY OF THE KOHN LAPLACIAN FOR THREE-DIMENSIONAL TUBULAR CAUCHY–RIEMANN STRUCTURES

Published online by Cambridge University Press:  24 January 2003

Michael Christ
Michael Christ
Affiliation:
Department of Mathematics, University of California, Berkeley, CA 94720-3840, USA ([email protected])
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Abstract

A necessary and sufficient geometric condition is established for the Kohn Laplacian to be hypoelliptic, modulo its nullspace, for boundaries of arbitrary infinitely differentiable pseudoconvex tube domains in two complex variables. Hypoellipticity is also proved to be equivalent to validity of a superlogarithmic estimate, for this special class of structures.

AMS 2000 Mathematics subject classification: Primary 32W05; 32T27. Secondary 35J70.

Keywords

hypoellipticityKohn Laplacianpseudoconvexsuperlogarithmic estimatenonlinear eigenvalues
Type
Research Article
Information
Journal of the Institute of Mathematics of Jussieu , Volume 1 , Issue 2 , April 2002 , pp. 279 - 291
Copyright
2002 Cambridge University Press

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