A necessary condition for the hypoellipticity of second-order equations with alternating characteristic form

DOI10.1007/BF01092177zbMath0546.35017MaRDI QIDQ798505

Ha Tien Ngoan

Publication date: 1983

Published in: Ukrainian Mathematical Journal (Search for Journal in Brave)

zbMATH Keywords

Dirichlet problemhypoellipticityalternating characteristic formoperators with non-negative quadratic partreal-valued coefficientssecond order differential operator

Mathematics Subject Classification ID

Hypoelliptic equations (35H10) Boundary value problems for linear higher-order PDEs (35G15)

Cites Work

• Hypoelliptic second order differential equations
• Lectures on Pseudo-Differential Operators: Regularity Theorems and Applications to Non-Elliptic Problems. (MN-24)
• Unnamed Item

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