If someone were to implement code for the generalized eigenvalue problem in Python, I'd be interested in a C translation as well. Speeding up mpmath is possible.

The python script will iteratively run the example with different eigenvalue filtering strategies and Poisson's ratios. You can find the results in results/.

A complete understanding of the limiting behavior of the principal eigenvalue and its eigenfunction is obtained, and new fundamental effects of large degenerate advection and boundary conditions on ...