[petsc-users] How to solve the pressure possion equations with four neuman bc

[Jed Brown]

"Kong, Fande" <fande.kong at inl.gov> writes:

> Any references on this topic except the users manual?  I am interested in
> mathematics theory on this topic.

These are relevant. I've only skimmed them briefly, but they might
suggest ways to improve PETSc's handling of singular systems.  The
technique is ancient.

https://doi.org/10.1137/S0895479803437803

https://doi.org/10.1007/s10543-009-0247-7
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