Ilia Gradina

Patch attached, file: 0001-draw-run-the-generated-vtk-script-with-python3.patch

file: 0002-matrixexp-matrixfun-work-in-DOMAIN-COMPLEX.patch

file: 0001-spectral_rep-project-with-a-generic-eigenvalue-when-.patch

Cause found, patch attached. Two independent defects, both in share/linearalgebra. 1. The residue division is not exact over the eigenvalues. spectral_rep builds each projector as a residue of the resolvent at one eigenvalue, so rational-residue divides the characteristic polynomial by (z - zi) with zi already substituted. Once zi is a cubic irrationality that division stops being exact: the projectors come out wrong by O(1) and check-spectral-rep rejects them, which is the reported error. For a...