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<div id="version" align=right><b>petsc-3.14.5 2021-03-03</b></div>
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<A NAME="PCDeflationSpaceType"><H1>PCDeflationSpaceType</H1></A>
Type of deflation
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
typedef enum {
<A HREF="../PC/PCDeflationSpaceType.html#PCDeflationSpaceType">PC_DEFLATION_SPACE_HAAR</A>,
<A HREF="../PC/PCDeflationSpaceType.html#PCDeflationSpaceType">PC_DEFLATION_SPACE_DB2</A>,
<A HREF="../PC/PCDeflationSpaceType.html#PCDeflationSpaceType">PC_DEFLATION_SPACE_DB4</A>,
<A HREF="../PC/PCDeflationSpaceType.html#PCDeflationSpaceType">PC_DEFLATION_SPACE_DB8</A>,
<A HREF="../PC/PCDeflationSpaceType.html#PCDeflationSpaceType">PC_DEFLATION_SPACE_DB16</A>,
<A HREF="../PC/PCDeflationSpaceType.html#PCDeflationSpaceType">PC_DEFLATION_SPACE_BIORTH22</A>,
<A HREF="../PC/PCDeflationSpaceType.html#PCDeflationSpaceType">PC_DEFLATION_SPACE_MEYER</A>,
<A HREF="../PC/PCDeflationSpaceType.html#PCDeflationSpaceType">PC_DEFLATION_SPACE_AGGREGATION</A>,
<A HREF="../PC/PCDeflationSpaceType.html#PCDeflationSpaceType">PC_DEFLATION_SPACE_USER</A>
} <A HREF="../PC/PCDeflationSpaceType.html#PCDeflationSpaceType">PCDeflationSpaceType</A>;
</PRE>
<H3><FONT COLOR="#CC3333">Values</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B><A HREF="../PC/PCDeflationSpaceType.html#PCDeflationSpaceType">PC_DEFLATION_SPACE_HAAR</A> </B></TD><TD>- directly assembled based on Haar (db2) wavelet with overflowed filter cuted-off
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B><A HREF="../PC/PCDeflationSpaceType.html#PCDeflationSpaceType">PC_DEFLATION_SPACE_DB2</A> </B></TD><TD>- <A HREF="../Mat/MATCOMPOSITE.html#MATCOMPOSITE">MATCOMPOSITE</A> of 1-lvl matices based on db2 (2 coefficient Daubechies / Haar wavelet)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B><A HREF="../PC/PCDeflationSpaceType.html#PCDeflationSpaceType">PC_DEFLATION_SPACE_DB4</A> </B></TD><TD>- same as above, but with db4 (4 coefficient Daubechies)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B><A HREF="../PC/PCDeflationSpaceType.html#PCDeflationSpaceType">PC_DEFLATION_SPACE_DB8</A> </B></TD><TD>- same as above, but with db8 (8 coefficient Daubechies)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B><A HREF="../PC/PCDeflationSpaceType.html#PCDeflationSpaceType">PC_DEFLATION_SPACE_DB16</A> </B></TD><TD>- same as above, but with db16 (16 coefficient Daubechies)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B><A HREF="../PC/PCDeflationSpaceType.html#PCDeflationSpaceType">PC_DEFLATION_SPACE_BIORTH22</A> </B></TD><TD>- same as above, but with biorthogonal 2.2 (6 coefficients)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B><A HREF="../PC/PCDeflationSpaceType.html#PCDeflationSpaceType">PC_DEFLATION_SPACE_MEYER</A> </B></TD><TD>- same as above, but with Meyer/FIR (62 coefficients)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B><A HREF="../PC/PCDeflationSpaceType.html#PCDeflationSpaceType">PC_DEFLATION_SPACE_AGGREGATION</A> </B></TD><TD>- aggregates local indices (given by operator matix distribution) into a subdomain
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B><A HREF="../PC/PCDeflationSpaceType.html#PCDeflationSpaceType">PC_DEFLATION_SPACE_USER</A> </B></TD><TD>- indicates space set by user
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
Wavelet-based space (except Haar) can be used in multilevel deflation.
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../PC/PCDeflationSetSpaceToCompute.html#PCDeflationSetSpaceToCompute">PCDeflationSetSpaceToCompute</A>(), <A HREF="../PC/PCDEFLATION.html#PCDEFLATION">PCDEFLATION</A>
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>intermediate<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/ksp/pc/../../../include/petscpctypes.h.html#PCDeflationSpaceType">src/ksp/pc/../../../include/petscpctypes.h</A>
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