On hypoellipticity for a certain operator with double characteristic

DOI10.2969/jmsj/04330593zbMath0764.35029OpenAlexW1972650727MaRDI QIDQ1179725

Toshihiko Hoshiro

Publication date: 27 June 1992

Published in: Journal of the Mathematical Society of Japan (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.2969/jmsj/04330593

Mathematics Subject Classification ID

Geometric theory, characteristics, transformations in context of PDEs (35A30) Hypoelliptic equations (35H10) Propagation of singularities; initial value problems on manifolds (58J47)

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