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<head><title>trace(Matrix) -- trace of a matrix</title>
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<div><h1>trace(Matrix) -- trace of a matrix</h1>
<div class="single"><h2>Synopsis</h2>
<ul><li><span>Function: <a href="_trace_lp__Matrix_rp.html" title="trace of a matrix">trace</a></span></li>
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<div class="single"><h2>Description</h2>
<div><tt>trace f</tt> -- returns the trace of the matrix f.<p/>
<table class="examples"><tr><td><pre>i1 : R = ZZ/101[a..d]
o1 = R
o1 : PolynomialRing</pre>
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<tr><td><pre>i2 : p = matrix {{a,b},{c,d}}
o2 = | a b |
| c d |
2 2
o2 : Matrix R <--- R</pre>
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<tr><td><pre>i3 : trace p
o3 = a + d
o3 : R</pre>
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