Ruderfer, V. I. Über die Nullstellen der Lösungen einer linearen analytischen partiellen Differentialgleichung beliebiger Ordnung. (Russian) Zbl 0416.35073 Mat. Sb., N. Ser. 109(151), 432-439 (1979). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 Review MSC: 35R25 Ill-posed problems for PDEs 35A10 Cauchy-Kovalevskaya theorems 35B05 Oscillation, zeros of solutions, mean value theorems, etc. in context of PDEs 35E20 General theory of PDEs and systems of PDEs with constant coefficients Keywords:improperly posed problems; Cauchy-Kowalewskaya theorem; analytic coefficients; elliptic operator; zeros of solutions PDFBibTeX XMLCite \textit{V. I. Ruderfer}, Mat. Sb., Nov. Ser. 109(151), 432--439 (1979; Zbl 0416.35073) Full Text: EuDML