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
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
<?xml version="1.0" encoding="UTF-8"?>
<!--
* Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
* Copyright (C) 2008 - INRIA
*
* This file must be used under the terms of the CeCILL.
* This source file is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at
* http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
*
-->
<refentry xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svg="http://www.w3.org/2000/svg" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:db="http://docbook.org/ns/docbook" version="5.0-subset Scilab" xml:lang="fr" xml:id="kernel">
<info>
<pubdate>$LastChangedDate$</pubdate>
</info>
<refnamediv>
<refname>kernel</refname>
<refpurpose> noyau </refpurpose>
</refnamediv>
<refsynopsisdiv>
<title>Séquence d'appel</title>
<synopsis>W=kernel(A [,tol,[,flag])</synopsis>
</refsynopsisdiv>
<refsection>
<title>Paramètres</title>
<variablelist>
<varlistentry>
<term>A </term>
<listitem>
<para>matrice réelle ou complexe (pleine ou creuse)
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>flag </term>
<listitem>
<para>chaîne de caractères
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>tol </term>
<listitem>
<para>nombre réel
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>W </term>
<listitem>
<para>matrice régulière
</para>
</listitem>
</varlistentry>
</variablelist>
</refsection>
<refsection>
<title>Description</title>
<para><literal>W=kernel(A)</literal> calcule le noyau de <literal>A</literal>. Les colonnes de <literal>W</literal> forment une base du noyau de <literal>A</literal>. Si A est régulière, alors W=[].
</para>
<para><literal>flag</literal> et <literal>tol</literal> sont des paramètres optionnels : <literal>flag = 'qr'</literal>
or <literal>'svd'</literal> (<literal>'svd'</literal> par défaut).
</para>
<para><literal>tol</literal> = paramètre de tolérance (de l'ordre de <literal>%eps</literal> par défaut).
</para>
</refsection>
<refsection>
<title>Exemples</title>
<programlisting role="example"><![CDATA[
A=rand(3,1)*rand(1,3);
A*kernel(A)
A=sparse(A);
clean(A*kernel(A))
]]></programlisting>
</refsection>
<refsection>
<title>Voir Aussi</title>
<simplelist type="inline">
<member>
<link linkend="colcomp">colcomp</link>
</member>
<member>
<link linkend="fullrf">fullrf</link>
</member>
<member>
<link linkend="fullrfk">fullrfk</link>
</member>
<member>
<link linkend="linsolve">linsolve</link>
</member>
</simplelist>
</refsection>
<refsection>
<title>Auteurs</title>
<para>F.D.; </para>
</refsection>
</refentry>
|
