[petsc-dev] How do you get RIchardson?

[Jed Brown]

On Fri, Sep 16, 2011 at 22:14, Matthew Knepley <knepley at gmail.com> wrote:

> Water Resources is your standard for mathematical terminology?


It's the whole first page of results for each query.

More seriously though, what is the problem with

x_{n+1} = A(x_n)^{-1} b

being a valid fixed-point iteration?
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