Abalos, Fernando; Reula, Oscar On necessary and sufficient conditions for strong hyperbolicity in systems with constraints. (English) Zbl 1479.35555 Classical Quantum Gravity 37, No. 18, Article ID 185012, 38 p. (2020). MSC: 35L45 35E15 PDFBibTeX XMLCite \textit{F. Abalos} and \textit{O. Reula}, Classical Quantum Gravity 37, No. 18, Article ID 185012, 38 p. (2020; Zbl 1479.35555) Full Text: DOI arXiv
Abalos, Fernando A necessary condition ensuring the strong hyperbolicity of first-order systems. (English) Zbl 1437.35455 J. Hyperbolic Differ. Equ. 16, No. 1, 193-221 (2019). MSC: 35L40 PDFBibTeX XMLCite \textit{F. Abalos}, J. Hyperbolic Differ. Equ. 16, No. 1, 193--221 (2019; Zbl 1437.35455) Full Text: DOI arXiv