<?xml version="1.0" encoding="utf-8" ?> <!-- for emacs: -*- coding: utf-8 -*- -->
<!-- Apache may like this line in the file .htaccess: AddCharset utf-8 .html -->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg-flat.dtd" >
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head><title>ChainComplex _ ZZ = Thing -- install component of chain complex</title>
<link rel="stylesheet" type="text/css" href="../../../../Macaulay2/Style/doc.css"/>
</head>
<body>
<table class="buttons">
<tr>
<td><div><a href="___Chain__Complex_sp__Array.html">next</a> | <a href="___Chain__Complex_sp_us_sp__Z__Z.html">previous</a> | <a href="___Chain__Complex_sp__Array.html">forward</a> | <a href="___Chain__Complex_sp_us_sp__Z__Z.html">backward</a> | up | <a href="index.html">top</a> | <a href="master.html">index</a> | <a href="toc.html">toc</a> | <a href="http://www.math.uiuc.edu/Macaulay2/">Macaulay2 web site</a></div>
</td>
</tr>
</table>
<hr/>
<div><h1>ChainComplex _ ZZ = Thing -- install component of chain complex</h1>
<div class="single"><h2>Synopsis</h2>
<ul><li><div class="list"><dl class="element"><dt class="heading">Usage: </dt><dd class="value"><div><tt>C_i = M</tt></div>
</dd></dl>
</div>
</li>
<li><span>Operator: <a href="__us.html" title="a binary operator, used for subscripting and access to elements">_</a></span></li>
<li><div class="single">Inputs:<ul><li><span><tt>C</tt>, <span>a <a href="___Chain__Complex.html">chain complex</a></span></span></li>
<li><span><tt>i</tt>, <span>an <a href="___Z__Z.html">integer</a></span></span></li>
<li><span><tt>M</tt>, <span>a <a href="___Thing.html">thing</a></span></span></li>
</ul>
</div>
</li>
<li><div class="single">Outputs:<ul><li><span>install <tt>M</tt> as the <tt>i</tt>-th module of the chain complex <tt>C</tt></span></li>
</ul>
</div>
</li>
</ul>
</div>
<div class="single"><h2>Description</h2>
<div><table class="examples"><tr><td><pre>i1 : R = ZZ[x..z]
o1 = R
o1 : PolynomialRing</pre>
</td></tr>
<tr><td><pre>i2 : C = chainComplex R
o2 = 0
o2 : ChainComplex</pre>
</td></tr>
<tr><td><pre>i3 : C_2 = R^11
11
o3 = R
o3 : R-module, free</pre>
</td></tr>
<tr><td><pre>i4 : C_4 = R^13
13
o4 = R
o4 : R-module, free</pre>
</td></tr>
<tr><td><pre>i5 : C
11 13
o5 = R <-- 0 <-- R
2 3 4
o5 : ChainComplex</pre>
</td></tr>
</table>
</div>
</div>
<div class="single"><h2>See also</h2>
<ul><li><span><a href="___Chain__Complex__Map_sp_us_sp__Z__Z_sp_eq_sp__Thing.html" title="install component of chain complex map">ChainComplexMap _ ZZ = Thing</a> -- install component of chain complex map</span></li>
</ul>
</div>
</div>
</body>
</html>
