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<span class="kw">set </span><font color="Maroon" title="c3">z</font> =  <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/>
<a NAME="E1:26_1_1"/>
 <a href="grcat_1.html#K10" title="GRCAT_1:func.10">fun</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> is  <a href="grcat_1.html#V1" title="GRCAT_1:attr.1">additive</a> 
 
;<br/>
<span class="kw">hence </span><a NAME="E2:26_1_1"/>
 <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>) is  <a href="grcat_1.html#V3" title="GRCAT_1:attr.3">GroupMorphism-like</a> 
 <span class="kw">by</span> <span class="lab"><a class="ref" href="grcat_1.html#D13" target="_self" title="GRCAT_1:def.13">Def18</a></span>; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> verum</span><br/>


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