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<a NAME="E1:28_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/>
<a NAME="E2:28_1_1"/><span class="kw">then </span>
 <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#M1" title="GRCAT_1:mode.1">Morphism</a> of <font color="Maroon" title="c1">G</font>,<font color="Maroon" title="c2">H</font>
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="grcat_1.html#D14" target="_self" title="GRCAT_1:def.14">Def19</a></span>;<br/>
<span class="kw">hence </span><a NAME="E3:28_1_1"/>
 ex <font color="Olive">b<sub>1</sub></font> being    <a href="grcat_1.html#M1" title="GRCAT_1:mode.1">Morphism</a> of <font color="Maroon" title="c1">G</font>,<font color="Maroon" title="c2">H</font> st <font color="Olive">b<sub>1</sub></font> is  <a href="grcat_1.html#V2" title="GRCAT_1:attr.2">strict</a> 
 ; <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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