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<b>take </b>
 <a href="grcat_1.html#K11" title="GRCAT_1:func.11">ZERO</a> <font color="Maroon" title="c1">G</font>,<font color="Maroon" title="c2">H</font>
;<br/>

<b>thus </b><a NAME="E1:29_1_1"/>
(  <a href="grcat_1.html#K8" title="GRCAT_1:func.8">dom</a> <span class="p1">(<span class="default"><a href="grcat_1.html#K11" title="GRCAT_1:func.11">ZERO</a> <font color="Maroon" title="c1">G</font>,<font color="Maroon" title="c2">H</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c1">G</font> &amp;  <a href="grcat_1.html#K9" title="GRCAT_1:func.9">cod</a> <span class="p1">(<span class="default"><a href="grcat_1.html#K11" title="GRCAT_1:func.11">ZERO</a> <font color="Maroon" title="c1">G</font>,<font color="Maroon" title="c2">H</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c2">H</font> )
 ;<br/>


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