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Franco Dassi, Alessio Fumagalli, Ilario Mazzieri, Giuseppe Vacca, Mixed Virtual Element approximation of linear acoustic wave equation, IMA Journal of Numerical Analysis, Volume 44, Issue 5, September 2024, Pages 2864–2891, https://doi.org/10.1093/imanum/drad078
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Abstract
We design a Mixed Virtual Element Method for the approximated solution to the first-order form of the acoustic wave equation. In the absence of external loads, the semi-discrete method exactly conserves the system energy. To integrate in time the semi-discrete problem we consider a classical