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<head><title>length(GradedModule) -- length of a graded module</title>
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<div><h1>length(GradedModule) -- length of a graded module</h1>
<div class="single"><h2>Synopsis</h2>
<ul><li><span>Function: <a href="_length.html" title="length">length</a></span></li>
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<div class="single"><h2>Description</h2>
<div>The length of a graded module is the difference between the largest and smallest indices of occupied spots. Chain complexes are graded modules, so this function applies to them, too.<table class="examples"><tr><td><pre>i1 : R = QQ[x..z];</pre>
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<tr><td><pre>i2 : C = res coker vars R
1 3 3 1
o2 = R <-- R <-- R <-- R <-- 0
0 1 2 3 4
o2 : ChainComplex</pre>
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<tr><td><pre>i3 : length C
o3 = 3</pre>
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