Communications on Pure and Applied Mathematics · 1970 · 817 citations · 1 references
Natural SciencesMathematicsPhysicsDifferential EquationsDynamical SystemsBoundary ConditionsBoundary-value ProblemsHyperbolic DynamicsInitial ConditionsInitial Value ProblemsPartial Differential EquationsHyperbolic Boundary-value ProblemsHyperbolic Partial Differential EquationsInitial Boundary ConditionsInitial-boundary Value ProblemsNonlinear Initial Value Problems
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