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<b>let </b><font color="Maroon">p</font> be   <a href="rat_1.html#NM1">Rational</a>;<br/>

<a NAME="E1:36"/>
 <a href="rat_1.html#K1" target="_self">denominator</a> <font color="Maroon">p</font> <a href="hidden.html#NR2" target="_self">&lt;&gt;</a> 0
 
<b>by </b><i/>;<br/>
<b>hence </b><a NAME="E2:36"/>
(  <a href="rat_1.html#K2" target="_self">numerator</a> <font color="Maroon">p</font> <a href="hidden.html#R1">=</a> 0 iff <font color="Maroon">p</font> <a href="hidden.html#R1">=</a> 0 )
 <b>by </b><i><a class="ref" href="xcmplx_1.html#T6">XCMPLX_1:6</a></i>;<br/>


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