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<head><title>Power -- the class of all power expressions</title>
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<div><h1>Power -- the class of all power expressions</h1>
<div class="single"><h2>Description</h2>
<div><tt>Power</tt> is a type of <a href="___Expression.html" title="the class of all expressions">Expression</a> representing a power.<p/>
Normally power expressions with an exponent equal to 1 will not be produced. But it is desirable for <a href="_factor.html" title="factor a ring element or a ZZ-module">factor</a> to return a product of powers, and some of them will have 1 as exponent. The routines for printing of expressions will take this into account, suppress exponents equal to 1, and arrange for parenthesization correctly.</div>
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<div class="waystouse"><h2>Functions and methods returning a power expression :</h2>
<ul><li><span>Expression ^ Expression, see <span><a href="___Expression.html" title="the class of all expressions">Expression</a> -- the class of all expressions</span></span></li>
</ul>
<h2>Methods that use a power expression :</h2>
<ul><li><span>substitute(Power,Thing), see <span><a href="_substitute.html" title="substituting values for variables">substitute</a> -- substituting values for variables</span></span></li>
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<div class="waystouse"><h2>For the programmer</h2>
<p>The object <a href="___Power.html" title="the class of all power expressions">Power</a> is <span>a <a href="___Header__Type.html">header type</a></span>, with ancestor classes <a href="___Expression.html" title="the class of all expressions">Expression</a> < <a href="___Basic__List.html" title="the class of all basic lists">BasicList</a> < <a href="___Thing.html" title="the class of all things">Thing</a>.</p>
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