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<head><title>commonRing -- find smallest containing ring</title>
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<div><h1>commonRing -- find smallest containing ring</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>commonRing v</tt></div>
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<li><div class="single">Inputs:<ul><li><span><tt>v</tt>, a list of numbers, ring elements, matrices, or things with rings, see </span></li>
<li><span><a href="_ring.html" title="get the associated ring of an object">ring</a></span></li>
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<li><div class="single">Outputs:<ul><li><span><span>a <a href="___Ring.html">ring</a></span>, the smallest ring to which all members of the list can be promoted</span></li>
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<div class="single"><h2>Description</h2>
<div><table class="examples"><tr><td><pre>i1 : commonRing {1,2/3}
o1 = QQ
o1 : Ring</pre>
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<tr><td><pre>i2 : commonRing {1,2.}
o2 = RR
53
o2 : RealField</pre>
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<tr><td><pre>i3 : commonRing {1,2p100,matrix{{3p200}}}
o3 = RR
100
o3 : RealField</pre>
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<tr><td><pre>i4 : R = RR[x];</pre>
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<tr><td><pre>i5 : commonRing {1,2p100,matrix{{3p200}},0_R}
o5 = R
o5 : PolynomialRing</pre>
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<div class="waystouse"><h2>Ways to use <tt>commonRing</tt> :</h2>
<ul><li>commonRing(List)</li>
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