A note on reduced forms of effectively hyperbolic operators and energy integrals

zbMath0564.35068MaRDI QIDQ1058065

Tatsuo Nishitani

Publication date: 1984

Published in: Osaka Journal of Mathematics (Search for Journal in Brave)

zbMATH Keywords

fundamental matrixHamiltonian systemcanonical transformationsenergy integralsdouble characteristiceffectively hyperbolicstandard forms

Mathematics Subject Classification ID

Pseudodifferential operators as generalizations of partial differential operators (35S05) Geometric theory, characteristics, transformations in context of PDEs (35A30) Higher-order hyperbolic equations (35L25) First-order hyperbolic systems (35L40)

Related Items (2)

The Cauchy problem for operators with triple effectively hyperbolic characteristics: Ivrii's conjecture ⋮ Cauchy problem for effectively hyperbolic operators with triple characteristics

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