[petsc-dev] Bordered systems and low-rank corrections

[Jed Brown]

On Fri, Nov 4, 2011 at 13:55, Mark F. Adams <mark.adams at columbia.edu> wrote:

> The two actually look very similar.  The community that I learned Uzawa
> from is very familiar with Sherman-Morrison.   Uzawa might in fact be an
> iterative S-M ... the wikapedia page does not explain how to recover the
> solution Y and does not accommodate a non-zero RHS for the constraint
> equations.  Both of which you'd want to do to be general.


Well, the Schur complement is in the other direction. Are you talking about
the Uzawa or Sherman-Morrison page? It's easy enough either way.
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