[petsc-users] Ksp Null space

[Ataollah Mesgarnejad]

Dear Barry,

In that example the basis for null space is empty(only constant null space).
I was wondering how would I form a Vec for example a for a 2D null space?
Specifically I'm trying to remove a null space that its span(C,x,y) in my 2D
matrix that I form using DA?
Best,
Ata

On Mon, May 16, 2011 at 2:02 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:

>
>  src/ksp/ksp/examples/tests/ex20.c
>
>  Note that this is not a good example from the point of view of efficient
> generation of the matrix and solution of the linear system but it does
> demonstrate these functions
>
>   Barry
>
>
> On May 16, 2011, at 12:39 PM, Ataollah Mesgarnejad wrote:
>
> > Dear all,
> >
> > Does anyone know of any example programs that use MatNullSpaceCreate and
> KSPsetNullSpace routines?
> >
> > Best,
> > Ata
>
>


-- 
A. Mesgarnejad
PhD Student, Research Assistant
Mechanical Engineering Department
Louisiana State University
2203 Patrick F. Taylor Hall
Baton Rouge, La 70803
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