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Further docs fixes.
This commit is contained in:
Salvatore Filippone
2008-07-23 09:08:06 +00:00
parent cf4061d09e
commit 5a8ed47797
34 changed files with 5454 additions and 5187 deletions
+26 -26
View File
@@ -26,30 +26,30 @@ original version by: Nikos Drakos, CBLU, University of Leeds
<BODY >
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@@ -70,8 +70,8 @@ the coarse-level matrix <SPAN CLASS="MATH"><IMG
SRC="img43.png"
ALT="$A_C$"></SPAN>, MLD2P4 uses the <SPAN CLASS="textit">smoothed aggregation</SPAN>
algorithm described in [<A
HREF="node30.html#BREZINA_VANEK">1</A>,<A
HREF="node30.html#VANEK_MANDEL_BREZINA">24</A>].
HREF="node24.html#BREZINA_VANEK">1</A>,<A
HREF="node24.html#VANEK_MANDEL_BREZINA">24</A>].
The basic idea of this algorithm is to build a coarse set of vertices
<SPAN CLASS="MATH"><IMG
WIDTH="32" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
@@ -120,8 +120,8 @@ Three main steps can be identified in the smoothed aggregation procedure:
<P>
To perform the coarsening step, we have implemented the aggregation algorithm sketched
in [<A
HREF="node30.html#apnum_07">4</A>]. According to [<A
HREF="node30.html#VANEK_MANDEL_BREZINA">24</A>], a modification of
HREF="node24.html#apnum_07">4</A>]. According to [<A
HREF="node24.html#VANEK_MANDEL_BREZINA">24</A>], a modification of
this algorithm has been actually considered,
in which each aggregate <SPAN CLASS="MATH"><IMG
WIDTH="26" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
@@ -177,9 +177,9 @@ dependent on the number of processors and on the initial partitioning of the mat
Nevertheless, this algorithm has been chosen for the implementation in MLD2P4,
since it has been shown to produce good results in practice
[<A
HREF="node30.html#aaecc_07">3</A>,<A
HREF="node30.html#apnum_07">4</A>,<A
HREF="node30.html#TUMINARO_TONG">23</A>].
HREF="node24.html#aaecc_07">3</A>,<A
HREF="node24.html#apnum_07">4</A>,<A
HREF="node24.html#TUMINARO_TONG">23</A>].
<P>
The prolongator <SPAN CLASS="MATH"><IMG
@@ -259,8 +259,8 @@ P_C = S P,
in order to remove oscillatory components from the range of the prolongator
and hence to improve the convergence properties of the multi-level
Schwarz method [<A
HREF="node30.html#BREZINA_VANEK">1</A>,<A
HREF="node30.html#StubenGMD69_99">22</A>].
HREF="node24.html#BREZINA_VANEK">1</A>,<A
HREF="node24.html#StubenGMD69_99">22</A>].
A simple choice for <SPAN CLASS="MATH"><IMG
WIDTH="16" HEIGHT="15" ALIGN="BOTTOM" BORDER="0"
SRC="img82.png"
@@ -293,36 +293,36 @@ using some estimate of the spectral radius of <SPAN CLASS="MATH"><IMG
WIDTH="50" HEIGHT="21" ALIGN="BOTTOM" BORDER="0"
SRC="img85.png"
ALT="$D^{-1}A$"></SPAN> [<A
HREF="node30.html#BREZINA_VANEK">1</A>].
HREF="node24.html#BREZINA_VANEK">1</A>].
<P>
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HREF="node11.html">Multi-level Schwarz Preconditioners</A>
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