Vaillant, Jean Propriété de symétrie des matrices localisees d’une matrice fortement hyperbolique en un point multiple. (French) Zbl 0385.35043 Equat. Deriv. part., Proc., Saint-Jean-de-Monts 1977, Lect. Notes Math. 660, 190-205 (1978). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 35L55 Higher-order hyperbolic systems 35L30 Initial value problems for higher-order hyperbolic equations 35B99 Qualitative properties of solutions to partial differential equations × Cite Format Result Cite Review PDF Full Text: Numdam EuDML