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<head><title>char -- computes the characteristic of the ring or field</title>
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<div><h1>char -- computes the characteristic of the ring or field</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>char F</tt></div>
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<li><div class="single">Inputs:<ul><li><span><tt>F</tt>, <span>a <a href="___Ring.html">ring</a></span>, or <span>an <a href="___Affine__Variety.html">affine variety</a></span> or <span>a <a href="___Projective__Variety.html">projective variety</a></span></span></li>
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<li><div class="single">Outputs:<ul><li><span><span>an <a href="___Z__Z.html">integer</a></span>, the characteristic of the ring. If <tt>F</tt> is an affine or projective variety, then the characteristic of the corresponding ring is returned</span></li>
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<div class="single"><h2>Description</h2>
<div><table class="examples"><tr><td><pre>i1 : R = ZZ/10007[x,y];</pre>
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<tr><td><pre>i2 : char R
o2 = 10007</pre>
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<tr><td><pre>i3 : R = ZZ[x]/823671827384723894723894723892
o3 = R
o3 : QuotientRing</pre>
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<tr><td><pre>i4 : char R
o4 = 823671827384723894723894723892</pre>
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<div class="waystouse"><h2>Ways to use <tt>char</tt> :</h2>
<ul><li>char(AffineVariety)</li>
<li>char(InexactField)</li>
<li>char(ProjectiveVariety)</li>
<li>char(Ring)</li>
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