Estimates of deviations from exact solutions of initial boundary value problems for the wave equation
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We derive computable upper bounds of the difference between an exact solution of the initial boundary value problem for a linear hyperbolic equation and any function in a space-time cylinder that belongs to the respective energy class. We prove that the bounds vanish if and only if the approximate solution coincides with the exact one. Bibliography: 13 titles.
KeywordsVariational Inequality Steklov Institute Posteriori Error Initial Boundary Parabolic Problem
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