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Re: lagrange multiplier on boundary

 

Oh really? And then I could call a direct solver on it? Is there a demo somewhere that shows this?

I could also use an Uzawa method. But concatenating matrices would be fine for me.

- Shawn

On Thu, 16 Apr 2009, Anders Logg wrote:

On Thu, Apr 16, 2009 at 02:14:24PM -0400, Shawn Walker wrote:
Well, this should be a capability!  :)

Is it possible to define more than one form, assemble the corresponding
matrices and then concatenate them in DOLFIN?

Yes, you should be able to use BlockMatrix and BlockVector for this.

--
Anders



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