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MOTZ (Marching-Of-The-Zeros)

This repository implements the algorithms MOTZ and MOTZ_flip developed in

M. Bernkopf, S. Sauter, C. Torres, A. Veit. Solvability of Discrete Helmholtz Equations. To appear in IMA Journal of Numerical Analysis.

The easiest way to get started is to open the Jupyter notebook and look at the provided examples. The notebook provides two example meshes - one where MOTZ returns certified and one where critical is returned. We are using the python libraries dmsh and meshplex for mesh generation. The second example shows how the correct mesh input format can be achieved by providing nodes and cells (triangles) of a mesh and should therefore be straighforward to adapt to a mesh of interest.

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