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for <font color="Olive">x</font>, <font color="Olive">y</font> being  <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">G</font> holds  <span class="p1">(<span class="default"><a href="grcat_1.html#K8">ZeroMap</a> <font color="Maroon">G</font>,<font color="Maroon">H</font></span>)</span> <a href="funct_2.html#K3">.</a> <span class="p1">(<span class="default"><font color="Olive">x</font> <a href="rlvect_1.html#K2">+</a> <font color="Olive">y</font></span>)</span> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="grcat_1.html#K8">ZeroMap</a> <font color="Maroon">G</font>,<font color="Maroon">H</font></span>)</span> <a href="funct_2.html#K3">.</a> <font color="Olive">x</font></span>)</span> <a href="rlvect_1.html#K2">+</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="grcat_1.html#K8">ZeroMap</a> <font color="Maroon">G</font>,<font color="Maroon">H</font></span>)</span> <a href="funct_2.html#K3">.</a> <font color="Olive">y</font></span>)</span>
 
<b>by </b><i><a class="ref" href="mod_4.html#D2" target="_self">Def2</a></i>;<br/>
<b>hence </b><a NAME="E2:73_1_1"/>
 <a href="grcat_1.html#K8">ZeroMap</a> <font color="Maroon">G</font>,<font color="Maroon">H</font> is    <a href="mod_4.html#M1" target="_self">Homomorphism</a> of <font color="Maroon">G</font>,<font color="Maroon">H</font>
 <b>by </b><i/>;<br/>


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