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- W1972393088 abstract "The goal of this work is to determine appropriate domain and range of the map from the coefficients to the solutions of the wave equation for which its linearization or formal derivative is bounded and the properties of the coefficients on which the bound depends.Such information is indispensable in the study of the inverse (coefficient identification) problem vio smooth optimization methods. The main result of this paper is an explicit microlocal Sobolev estimate for the linearized forward map. In view of results of Rakesh [19] for the smooth coefficient case, the order of our regularity result is optimal. Our proof is based on the method of nonsmooth microlocal analysis, in particular various results on propagation of singularities, the method of progressing wave expansions, microlocal study of solutions of the transport equations, study of conormal properties of the fundamental solution, and a duality technique." @default.
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- W1972393088 date "1996-01-01" @default.
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- W1972393088 title "On the sensitivity of solutions of hyperbolic" @default.
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- W1972393088 doi "https://doi.org/10.1080/03605309608821190" @default.
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