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An oscillation theorem for characteristic initial value problems for nonlinear hyperbolic equations


Author: Norio Yoshida
Journal: Proc. Amer. Math. Soc. 76 (1979), 95-100
MSC: Primary 35B05
MathSciNet review: 534396
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Abstract: The nonlinear hyperbolic operator $ L[u] \equiv {u_{xy}} + c(x,y,u)$ is studied and sufficient conditions are given that all solutions of the characteristic initial value problem for $ uL[u] \leqslant 0$ are oscillatory in $ (0,\infty ) \times (0,\infty )$.


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Additional Information

DOI: https://doi.org/10.1090/S0002-9939-1979-0534396-6
Keywords: Characteristic initial value problem, oscillation, nonlinear hyperbolic equations
Article copyright: © Copyright 1979 American Mathematical Society