Loss of derivatives for systems of complex vector fields and sums of squares

Giuseppe Zampieri; Stefano Pinton; Tran Vu Khanh

arxiv: 1009.0486 · v1 · pith:PNWRTM44new · submitted 2010-09-02 · 🧮 math.CV

Loss of derivatives for systems of complex vector fields and sums of squares

Tran Vu Khanh , Stefano Pinton , Giuseppe Zampieri This is my paper

classification 🧮 math.CV

keywords complexderivativesfieldslosssquaressumssystemsvector

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We discuss, both for systems of complex vector fields and for sums of squares, the phenomenon discovered by Kohn of hypoellipticity with loss of derivatives.

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Loss of derivatives for systems of complex vector fields and sums of squares

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