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<b>let </b><font color="Maroon">c<sub>1</sub></font> be   <a href="cat_4.html#NM2">Cocartesian_category</a>;<br/><b>let </b><font color="Maroon">c<sub>2</sub></font> be   <a href="cat_1.html#NM1">Object</a> of <font color="Maroon">c<sub>1</sub></font>;<br/>



<a NAME="E1:83"/>
(  <a href="cat_4.html#K19" target="_self">[0]</a> <font color="Maroon">c<sub>1</sub></font> is <a href="cat_1.html#V7">initial</a> &amp;  <a href="cat_4.html#K24" target="_self">init</a> <font color="Maroon">c<sub>2</sub></font> <a href="hidden.html#R1">=</a>  <a href="cat_3.html#K11">init</a> <span class="p1">(<span class="default"><a href="cat_4.html#K19" target="_self">[0]</a> <font color="Maroon">c<sub>1</sub></font></span>)</span>,<font color="Maroon">c<sub>2</sub></font> )
 
<b>by </b><i><a class="ref" href="cat_4.html#T58" target="_self">Th58</a>, <a class="ref" href="cat_4.html#T61" target="_self">Th61</a></i>;<br/>
<b>hence </b><a NAME="E2:83"/>
(  <a href="cat_1.html#K2">dom</a> <span class="p1">(<span class="default"><a href="cat_4.html#K24" target="_self">init</a> <font color="Maroon">c<sub>2</sub></font></span>)</span> <a href="hidden.html#R1">=</a>  <a href="cat_4.html#K19" target="_self">[0]</a> <font color="Maroon">c<sub>1</sub></font> &amp;  <a href="cat_1.html#K3">cod</a> <span class="p1">(<span class="default"><a href="cat_4.html#K24" target="_self">init</a> <font color="Maroon">c<sub>2</sub></font></span>)</span> <a href="hidden.html#R1">=</a> <font color="Maroon">c<sub>2</sub></font> )
 <b>by </b><i><a class="ref" href="cat_3.html#T42">CAT_3:42</a></i>;<br/>


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