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<a NAME="E1:34_1_1"/>
(  <a href="grcat_1.html#K9" target="_self">dom</a> <span class="p1">(<span class="default"><a href="grcat_1.html#K12" target="_self">ZERO</a> <font color="Maroon">c<sub>1</sub></font>,<font color="Maroon">c<sub>2</sub></font></span>)</span> <a href="hidden.html#R1">=</a> <font color="Maroon">c<sub>1</sub></font> &amp;  <a href="grcat_1.html#K10" target="_self">cod</a> <span class="p1">(<span class="default"><a href="grcat_1.html#K12" target="_self">ZERO</a> <font color="Maroon">c<sub>1</sub></font>,<font color="Maroon">c<sub>2</sub></font></span>)</span> <a href="hidden.html#R1">=</a> <font color="Maroon">c<sub>2</sub></font> )
 
;<br/>
<a NAME="E2:34_1_1"/><b>then </b>
 <a href="grcat_1.html#K12" target="_self">ZERO</a> <font color="Maroon">c<sub>1</sub></font>,<font color="Maroon">c<sub>2</sub></font> is    <a href="grcat_1.html#M1" target="_self">Morphism</a> of <font color="Maroon">c<sub>1</sub></font>,<font color="Maroon">c<sub>2</sub></font>
 
<b>by </b><i><a class="ref" href="grcat_1.html#D19" target="_self">Def19</a></i>;<br/>
<b>hence </b><a NAME="E3:34_1_1"/>
ex <font color="Olive">b<sub>1</sub></font> being   <a href="grcat_1.html#M1" target="_self">Morphism</a> of <font color="Maroon">c<sub>1</sub></font>,<font color="Maroon">c<sub>2</sub></font> st <font color="Olive">b<sub>1</sub></font> is <a href="grcat_1.html#V2" target="_self">strict</a>
 ;<br/>


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