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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">Hi everyone,<br>
<br>
suppose I need to solve the following linear systems:<br>
<br>
<font color="black" face="Tahoma" size="2"><span style="font-size:10pt;" dir="ltr">| A - B^T| | x | = 0<br>
| B C | | y | = g<br>
<br>
I have already implemented the three operators A, B and C.<br>
</span></font>
<div>I would like to use a direct / iterative solver in order to solve the entire system, i.e. without any formal elimination of one of the two variables.<br>
<br>
Pay attention that x and y are, in practice, a scalar-valued and a vector-valued function, so their algebraic counterparts have different sizes, i.e. the four blocks don't have identical dimensions.<br>
Is it possible to implement such a solver in DUNE-FEM, maybe interfacing with DUNE-ISTL, "gluing" the four blocks to get the solution after the "black-box" solver has been used?<br>
<br>
Cheers,<br>
<br>
Andrea<br>
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__________________________________________________________<br>
<br>
Andrea Sacconi<br>
PhD student, Applied Mathematics<br>
AMMP Section, Department of Mathematics, Imperial College London,<br>
London SW7 2AZ, UK<br>
a.sacconi11@imperial.ac.uk<br>
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