about MatNullSpace

[Lisandro Dalcin]

1) Given that we can attach null spaces to KSP, Do you believe there
are good use cases for attaching them to Mat?

2) Given that currently the A and B operators of KSP actually live
inside the PC, perhaps the KSP null space should also live inside the
PC, ant PC should be in charge of removing the null space. What do you
think about this?



-- 
Lisandro Dalcín
---------------
Centro Internacional de Métodos Computacionales en Ingeniería (CIMEC)
Instituto de Desarrollo Tecnológico para la Industria Química (INTEC)
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
PTLC - Güemes 3450, (3000) Santa Fe, Argentina
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