Lanczos with partial reorthogonalization Finite difference approximation to Poisson's equation in an L-shaped region, mixed boundary conditions. My browser can't read the compressed data files.
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Click on label to get an explanation. 461836 bytes Matrix Statistics Click on label to get an explanation. 13 min max ave. 100.00 Top 7 out of 7 nonvoid diagonals. Horst Simon, Boeing Computer Services, Seattle, Washington.