Lanczos with partial reorthogonalization Finite difference approximation to diffusion equation with varying diffusivity in a 3D unit cube with Dirichlet boundary conditions. My browser can't read the compressed data files.
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Click on label to get an explanation. Matrix Statistics Click on label to get an explanation. 35 min max ave. Top 7 out of 7 nonvoid diagonals. Horst Simon, Boeing Computer Services, Seattle, Washington.