On a class of second order partial differential operators of non-principal type

DOI10.1007/BF02560001zbMath0595.35122MaRDI QIDQ3726664

Yu-Min Huang

Publication date: 1985

Published in: Acta Mathematica Sinica (Search for Journal in Brave)

zbMATH Keywords

principal symbolsubprincipal symbolsecond order linear differential operator

Mathematics Subject Classification ID

Linear higher-order PDEs (35G05) Pseudodifferential operators and other generalizations of partial differential operators (35S99)

Cites Work

• Differential operators of principal type
• Pseudo-differential operators with double characteristics
• Fourier integral operators. II
• On a necessary condition for the local solvability of psedudo-differential operators with double characteristics
• An Example in the Solvability Theory of Linear PDE's

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