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Über die Nullstellen der Lösungen einer linearen analytischen partiellen Differentialgleichung beliebiger Ordnung. (Russian) Zbl 0416.35073

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
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