Leray, Jean Non-strictly hyperbolic equations: counter-examples, of de Giorgi type, to existence and uniqueness theorems. (Équations hyperboliques non-stricts: Contre-exemples, du type de Giorgi, aux théorèmes d’existence et d’unicité.) (French) Zbl 0209.12601 Hyperbolic equations and waves, Battelle Res. Inst., Seattle, Wash., 1968, Rencontres, 274-282 (1970). Reviewer: M. Schechter Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 35L99 Hyperbolic equations and hyperbolic systems 35A01 Existence problems for PDEs: global existence, local existence, non-existence 35A02 Uniqueness problems for PDEs: global uniqueness, local uniqueness, non-uniqueness Keywords:Cauchy problem; neighborhood of a hyperplane; linear non-strictly hyperbolic partial differential operator; Gevrey type spaces Citations:Zbl 0186.29403; Zbl 0064.34504 PDFBibTeX XML Full Text: DOI