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On the energy estimates of semi-discrete wave equations with time dependent propagation speed

Discretization is a fundamental step in numerical analysis for the problems described by differential equations, and the difference between the continuous model and discrete model is one of the most important problems. In this paper, we consider the difference in the effect of the time-dependent propagation speed on the energy estimate of the solutions for the wave equation and the semi-discrete wave equation which is a discretization with respect to space variables.

preprint2020arXivOpen access
Fumihiko Hirosawa
math.AP
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Fumihiko Hirosawa

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