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Stability and instability results of the wave equation with a delay term in the boundary or internal feedbacks. (English) Zbl 1180.35095


MSC:

35B35 Stability in context of PDEs
35L05 Wave equation
93D15 Stabilization of systems by feedback
35L20 Initial-boundary value problems for second-order hyperbolic equations
35R10 Partial functional-differential equations
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