Duke Mathematical Journal

An extension of Hörmander’s theorem for infinitely degenerate second-order operators

Denis R. Bell and Salah-Eldin A. Mohammed

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Article information

Duke Math. J. Volume 78, Number 3 (1995), 453-475.

First available in Project Euclid: 20 February 2004

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Digital Object Identifier

Mathematical Reviews number (MathSciNet)

Zentralblatt MATH identifier

Primary: 35H05
Secondary: 35A30: Geometric theory, characteristics, transformations [See also 58J70, 58J72]


Bell, Denis R.; Mohammed, Salah-Eldin A. An extension of Hörmander’s theorem for infinitely degenerate second-order operators. Duke Math. J. 78 (1995), no. 3, 453--475. doi:10.1215/S0012-7094-95-07822-3. http://projecteuclid.org/euclid.dmj/1077285944.

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