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<head><title>EngineRing -- the class of rings handled by the engine</title>
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<div><h1>EngineRing -- the class of rings handled by the engine</h1>
<div class="single"><h2>Description</h2>
<div>The <a href="_engine.html" title="">engine</a> handles most of the types of rings in the system.<p/>
The command <tt>new Engine from x</tt> is not meant for general users, and provides the developers with a way to create top-level rings corresponding to rings implemented in the engine. Here <tt>x</tt> may be:<ul><li>commands for the engine, as a string, or a sequence or list of strings, which cause a ring to be placed on the top of the engine's stack.</li>
<li>a ring, in which case another top-level ring is formed as an interface to the same underlying engine ring.</li>
<li>the handle of on engine ring</li>
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<div class="waystouse"><h2>Types of engine ring :</h2>
<ul><li><span><a href="___Fraction__Field.html" title="the class of all fraction fields">FractionField</a> -- the class of all fraction fields</span></li>
<li><span><a href="___Galois__Field.html" title="the class of all Galois fields">GaloisField</a> -- the class of all Galois fields</span></li>
<li><span><a href="___Inexact__Field.html" title="the class of inexact fields">InexactField</a> -- the class of inexact fields</span></li>
<li><span><a href="___Polynomial__Ring.html" title="the class of all ordered monoid rings">PolynomialRing</a> -- the class of all ordered monoid rings</span></li>
<li><span><a href="___Quotient__Ring.html" title="the class of all quotient rings">QuotientRing</a> -- the class of all quotient rings</span></li>
<li><span><a href="../../SchurRings/html/___Schur__Ring.html" title="the class of all Schur rings">SchurRing</a> -- the class of all Schur rings</span></li>
</ul>
<h2>Methods that use an engine ring :</h2>
<ul><li><span>frac(EngineRing), see <span><a href="_frac.html" title="construct a fraction field">frac</a> -- construct a fraction field</span></span></li>
<li><span>isField(EngineRing), see <span><a href="_is__Field.html" title="whether something is a field">isField</a> -- whether something is a field</span></span></li>
<li><span>numgens(EngineRing), see <span><a href="_numgens_lp__Ring_rp.html" title="number of generators of a polynomial ring">numgens(Ring)</a> -- number of generators of a polynomial ring</span></span></li>
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<div class="waystouse"><h2>For the programmer</h2>
<p>The object <a href="___Engine__Ring.html" title="the class of rings handled by the engine">EngineRing</a> is <span>a <a href="___Type.html">type</a></span>, with ancestor classes <a href="___Ring.html" title="the class of all rings">Ring</a> < <a href="___Type.html" title="the class of all types">Type</a> < <a href="___Mutable__Hash__Table.html" title="the class of all mutable hash tables">MutableHashTable</a> < <a href="___Hash__Table.html" title="the class of all hash tables">HashTable</a> < <a href="___Thing.html" title="the class of all things">Thing</a>.</p>
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