<?xml version="1.0"?>
<div class="add">

<b>let </b><font color="Maroon">C</font> be   <a href="cat_1.html#NM4">Category</a>;<br/><b>let </b><font color="Maroon">D</font> be   <a href="cat_1.html#NM4">Category</a>;<br/><b>let </b><font color="Maroon">f</font> be   <a href="cat_1.html#NM2">Morphism</a> of <font color="Maroon">C</font>;<br/><b>let </b><font color="Maroon">g</font> be   <a href="cat_1.html#NM2">Morphism</a> of <font color="Maroon">D</font>;<br/>







<b>thus </b> <a href="cat_1.html#K2">dom</a> <span class="p1"><a href="cat_2.html#K13" target="_self">[</a><span class="default"><font color="Maroon">f</font>,<font color="Maroon">g</font></span><a href="cat_2.html#K13" target="_self">]</a></span> = 
<span class="p1"><a href="cat_2.html#K9" target="_self">[:</a><span class="default">the <a href="cat_1.html#U3">Dom</a> of <font color="Maroon">C</font>,the <a href="cat_1.html#U3">Dom</a> of <font color="Maroon">D</font></span><a href="cat_2.html#K9" target="_self">:]</a></span> <a href="binop_1.html#K2">.</a> <font color="Maroon">f</font>,<font color="Maroon">g</font>

<br/>.= 
<span class="p1"><a href="cat_2.html#K12" target="_self">[</a><span class="default"><span class="p2">(<span class="default"><a href="cat_1.html#K2">dom</a> <font color="Maroon">f</font></span>)</span>,<span class="p2">(<span class="default"><a href="cat_1.html#K2">dom</a> <font color="Maroon">g</font></span>)</span></span><a href="cat_2.html#K12" target="_self">]</a></span>
<b>by </b><i><a class="ref" href="funct_3.html#T96">FUNCT_3:96</a></i>
;<br/>

<b>thus </b> <a href="cat_1.html#K3">cod</a> <span class="p1"><a href="cat_2.html#K13" target="_self">[</a><span class="default"><font color="Maroon">f</font>,<font color="Maroon">g</font></span><a href="cat_2.html#K13" target="_self">]</a></span> = 
<span class="p1"><a href="cat_2.html#K9" target="_self">[:</a><span class="default">the <a href="cat_1.html#U4">Cod</a> of <font color="Maroon">C</font>,the <a href="cat_1.html#U4">Cod</a> of <font color="Maroon">D</font></span><a href="cat_2.html#K9" target="_self">:]</a></span> <a href="binop_1.html#K2">.</a> <font color="Maroon">f</font>,<font color="Maroon">g</font>

<br/>.= 
<span class="p1"><a href="cat_2.html#K12" target="_self">[</a><span class="default"><span class="p2">(<span class="default"><a href="cat_1.html#K3">cod</a> <font color="Maroon">f</font></span>)</span>,<span class="p2">(<span class="default"><a href="cat_1.html#K3">cod</a> <font color="Maroon">g</font></span>)</span></span><a href="cat_2.html#K12" target="_self">]</a></span>
<b>by </b><i><a class="ref" href="funct_3.html#T96">FUNCT_3:96</a></i>
;<br/>


</div>
