1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML3.2 EN">
<HTML>
<HEAD> <link rel="canonical" href="https://slepc.upv.es/documentation/current/docs/manualpages/EPS/EPSGetInvariantSubspace.html" />
<META NAME="GENERATOR" CONTENT="DOCTEXT">
<link rel="stylesheet" href="/slepc.css" type="text/css">
<TITLE>EPSGetInvariantSubspace</TITLE>
</HEAD>
<BODY BGCOLOR="FFFFFF">
<div id="version" align=right><b>slepc-3.14.2 2021-02-01</b></div>
<div id="bugreport" align=right><a href="mailto:slepc-maint@upv.es?subject=Typo or Error in Documentation &body=Please describe the typo or error in the documentation: slepc-3.14.2 v3.14.2 docs/manualpages/EPS/EPSGetInvariantSubspace.html "><small>Report Typos and Errors</small></a></div>
<H1>EPSGetInvariantSubspace</H1>
Gets an orthonormal basis of the computed invariant subspace.
<H3><FONT COLOR="#883300">Synopsis</FONT></H3>
<PRE>
#include "slepceps.h"
#include "slepcbv.h"
PetscErrorCode <A HREF="../EPS/EPSGetInvariantSubspace.html#EPSGetInvariantSubspace">EPSGetInvariantSubspace</A>(<A HREF="../EPS/EPS.html#EPS">EPS</A> eps,Vec v[])
</PRE>
Not Collective, but vectors are shared by all processors that share the <A HREF="../EPS/EPS.html#EPS">EPS</A>
<P>
<H3><FONT COLOR="#883300">Input Parameter</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>eps </B></TD><TD> - the eigensolver context
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Output Parameter</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>v </B></TD><TD> - an array of vectors
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Notes</FONT></H3>
This function should be called after <A HREF="../EPS/EPSSolve.html#EPSSolve">EPSSolve</A>() has finished.
<P>
The user should provide in v an array of nconv vectors, where nconv is
the value returned by <A HREF="../EPS/EPSGetConverged.html#EPSGetConverged">EPSGetConverged</A>().
<P>
The first k vectors returned in v span an invariant subspace associated
with the first k computed eigenvalues (note that this is not true if the
k-th eigenvalue is complex and matrix A is real; in this case the first
k+1 vectors should be used). An invariant subspace X of A satisfies Ax
in X for all x in X (a similar definition applies for generalized
eigenproblems).
<P>
<P>
<H3><FONT COLOR="#883300">See Also</FONT></H3>
<A HREF="../EPS/EPSGetEigenpair.html#EPSGetEigenpair">EPSGetEigenpair</A>(), <A HREF="../EPS/EPSGetConverged.html#EPSGetConverged">EPSGetConverged</A>(), <A HREF="../EPS/EPSSolve.html#EPSSolve">EPSSolve</A>()
<BR><P><B><FONT COLOR="#883300">Location: </FONT></B><A HREF="../../../src/eps/interface/epssolve.c.html#EPSGetInvariantSubspace">src/eps/interface/epssolve.c</A>
<BR><A HREF="./index.html">Index of all EPS routines</A>
<BR><A HREF="../../index.html">Table of Contents for all manual pages</A>
<BR><A HREF="../singleindex.html">Index of all manual pages</A>
</BODY></HTML>
|
