Mathematical Research Letters

Volume 13, Issue 5, September 2006 pp. 683-701.

Sums of squares of complex vector fields and (analytic-) hypoellipticity

Authors: Antonio Bove (1), Makhlouf Derridj (2), Joseph J. Kohn (3), and David S. Tartakoff (4)
Author institution: Università di Bologna (1), Università di Bologna (2), Princeton University (3), and University of Illinois at Chicago (4)

Summary:

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