# Matrix methods for wave equations

@article{Mugnolo2006MatrixMF, title={Matrix methods for wave equations}, author={Delio Mugnolo}, journal={Mathematische Zeitschrift}, year={2006}, volume={253}, pages={667-680} }

In analogy to a characterisation of operator matrices generating C0-semigroups due to R. Nagel ([13]), we give conditions on its entries in order that a 2×2 operator matrix generates a cosine operator function. We apply this to systems of wave equations, to second order initial-boundary value problems, and to overdamped wave equations.

## 9 Citations

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