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- W2053820778 abstract "On considere la non-unicite des C ∞ -solutions du probleme de Cauchy non caracteristique pour une classe d'operateurs a C ∞ -coefficients comprenant quelques operateurs elliptiques degeneres. On etablit une condition necessaire d'unicite portant sur les termes d'ordre inferieur. On montre que l'unicite n'a lieu que lorsque les termes d'ordre inferieur degenerent suivant l'ordre de degenerescence des parties imaginaires des racines caracteristiques. On etudie l'effet du comportement des parties imaginaires (ou reelles) des symboles d'operateurs" @default.
- W2053820778 created "2016-06-24" @default.
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- W2053820778 date "1985-01-01" @default.
- W2053820778 modified "2023-09-25" @default.
- W2053820778 title "Nonuniqueness in the Cauchy problem for partial differential operators with multiple characteristics. II" @default.
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- W2053820778 doi "https://doi.org/10.2977/prims/1195178925" @default.
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