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<div id="version" align=right><b>petsc-3.7.5 2017-01-01</b></div>
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<A NAME="MatSchurComplementGetKSP"><H1>MatSchurComplementGetKSP</H1></A>
Gets the <A HREF="../KSP/KSP.html#KSP">KSP</A> object that is used to invert A00 in the Schur complement matrix S = A11 - A10 ksp(A00,Ap00) A01
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscksp.h"
PetscErrorCode MatSchurComplementGetKSP(Mat S, KSP *ksp)
</PRE>
Not Collective
<P>
<H3><FONT COLOR="#CC3333">Input Parameter</FONT></H3>
<DT><B>S </B> -matrix obtained with <A HREF="../KSP/MatCreateSchurComplement.html#MatCreateSchurComplement">MatCreateSchurComplement</A>() (or equivalent) and implementing the action of A11 - A10 ksp(A00,Ap00) A01
<br>
<P>
<H3><FONT COLOR="#CC3333">Output Parameter</FONT></H3>
<DT><B>ksp </B> -the linear solver object
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<P>
<H3><FONT COLOR="#CC3333">Options Database</FONT></H3>
<DT><B>-fieldsplit_<splitname_0>_XXX sets <A HREF="../KSP/KSP.html#KSP">KSP</A> and <A HREF="../PC/PC.html#PC">PC</A> options for the 0</B> -split solver inside the Schur complement used in PCFieldSplit; default <splitname_0> is 0.
<br>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../KSP/MatSchurComplementSetKSP.html#MatSchurComplementSetKSP">MatSchurComplementSetKSP</A>(), <A HREF="../KSP/MatCreateSchurComplement.html#MatCreateSchurComplement">MatCreateSchurComplement</A>(), <A HREF="../Mat/MatCreateNormal.html#MatCreateNormal">MatCreateNormal</A>(), <A HREF="../Mat/MatMult.html#MatMult">MatMult</A>(), <A HREF="../Mat/MatCreate.html#MatCreate">MatCreate</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>intermediate
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/ksp/ksp/utils/schurm.c.html#MatSchurComplementGetKSP">src/ksp/ksp/utils/schurm.c</A>
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