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Some additional remarks on the nonexistence of global solutions to nonlinear wave equations. (English) Zbl 0243.35069

MSC:
35L60 First-order nonlinear hyperbolic equations
35B05 Oscillation, zeros of solutions, mean value theorems, etc. in context of PDEs
35D05 Existence of generalized solutions of PDE (MSC2000)
35L15 Initial value problems for second-order hyperbolic equations
34A12 Initial value problems, existence, uniqueness, continuous dependence and continuation of solutions to ordinary differential equations
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