Atiyah, Michael F.; Bott, Raoul; Gårding, Lars Lacunas for hyperbolic differential operators with constant coefficients. I. (Russian) Zbl 0208.13201 Usp. Mat. Nauk 26, No. 2(158), 25-100 (1971). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 2 Documents MSC: 35E20 General theory of PDEs and systems of PDEs with constant coefficients 58J45 Hyperbolic equations on manifolds 35A20 Analyticity in context of PDEs 35L25 Higher-order hyperbolic equations Citations:Zbl 0191.11203 PDFBibTeX XMLCite \textit{M. F. Atiyah} et al., Usp. Mat. Nauk 26, No. 2(158), 25--100 (1971; Zbl 0208.13201)