...Shearer

I received the data for this stack from Peter Shearer at the Cecil and Ida Green Institute of Geophysics

and Planetary Physics of the Scripps Oceanographic Institute. I also received his permission to redistribute it to friends and colleagues. Should you have occasion to copy it please reference Shearer (1991a) Shearer (1991b) it properly. Examples of earlier versions of these stacks are found in the references. Professor Shearer may be willing to supply newer and better stacks. His electronic mail address is shearer@mahi.ucsd.edu.

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...epsilon.

I am reminded that these solutions are slow compared to recursive solutions in 1-D. Because the stability of the 2-D recursions is not assured, however, we have no immediate alternative. This suggests that if we could find some way, however crude, to stabilize the recursions, it might lead to a huge speedup in iteration by conjugate directions. (Helical mapping will save the day.)

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