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<b>let </b><font color="Maroon" title="c1">B</font>, <font color="Maroon" title="c2">C</font>, <font color="Maroon" title="c3">D</font> be   <a href="cat_1.html#NM4" title="CAT_1:NM.4">Category</a>;<br/><b>let </b><font color="Maroon" title="c4">T</font> be    <a href="cat_1.html#M2" title="CAT_1:mode.2">Functor</a> of <font color="Maroon" title="c1">B</font>,<font color="Maroon" title="c2">C</font>;<br/><b>let </b><font color="Maroon" title="c5">S</font> be    <a href="cat_1.html#M2" title="CAT_1:mode.2">Functor</a> of <font color="Maroon" title="c2">C</font>,<font color="Maroon" title="c3">D</font>;<br/><b>let </b><font color="Maroon" title="c6">b</font> be   <a href="cat_1.html#NM1" title="CAT_1:NM.1">Object</a> of <font color="Maroon" title="c1">B</font>;<br/>











<b>consider </b><font color="Maroon" title="c7">d</font> being   <a href="cat_1.html#NM1" title="CAT_1:NM.1">Object</a> of <font color="Maroon" title="c3">D</font><b> such that </b><br/><a NAME="E2:96"/><i><font color="Green" title="E52">A1</font></i>: 
<span class="p1">(<span class="default"><font color="Maroon" title="c5">S</font> <a href="cat_1.html#K14" title="CAT_1:func.14">*</a> <font color="Maroon" title="c4">T</font></span>)</span> <a href="funct_2.html#K3" title="FUNCT_2:func.3">.</a> <span class="p1">(<span class="default"><a href="cat_1.html#K10" title="CAT_1:func.10">id</a> <font color="Maroon" title="c6">b</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="cat_1.html#K10" title="CAT_1:func.10">id</a> <font color="Maroon" title="c7">d</font>
 <b>by </b><i><a class="ref" href="cat_1.html#T97" target="_self" title="CAT_1:th.97">Th97</a></i>;<br/>
<b>consider </b><font color="Maroon" title="c8">c</font> being   <a href="cat_1.html#NM1" title="CAT_1:NM.1">Object</a> of <font color="Maroon" title="c2">C</font><b> such that </b><br/><a NAME="E4:96"/><i><font color="Green" title="E53">A2</font></i>: 
<font color="Maroon" title="c4">T</font> <a href="funct_2.html#K3" title="FUNCT_2:func.3">.</a> <span class="p1">(<span class="default"><a href="cat_1.html#K10" title="CAT_1:func.10">id</a> <font color="Maroon" title="c6">b</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="cat_1.html#K10" title="CAT_1:func.10">id</a> <font color="Maroon" title="c8">c</font>
 <b>by </b><i><a class="ref" href="cat_1.html#T97" target="_self" title="CAT_1:th.97">Th97</a></i>;<br/>
<a NAME="E5:96"/><i><font color="Green" title="E54">A3</font></i>: 
<span class="p1">(<span class="default"><font color="Maroon" title="c5">S</font> <a href="cat_1.html#K14" title="CAT_1:func.14">*</a> <font color="Maroon" title="c4">T</font></span>)</span> <a href="funct_2.html#K3" title="FUNCT_2:func.3">.</a> <span class="p1">(<span class="default"><a href="cat_1.html#K10" title="CAT_1:func.10">id</a> <font color="Maroon" title="c6">b</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c5">S</font> <a href="funct_2.html#K3" title="FUNCT_2:func.3">.</a> <span class="p1">(<span class="default"><font color="Maroon" title="c4">T</font> <a href="funct_2.html#K3" title="FUNCT_2:func.3">.</a> <span class="p2">(<span class="default"><a href="cat_1.html#K10" title="CAT_1:func.10">id</a> <font color="Maroon" title="c6">b</font></span>)</span></span>)</span>
 
<b>by </b><i><a class="ref" href="funct_2.html#T21" title="FUNCT_2:th.21">FUNCT_2:21</a></i>;<br/>
<b>thus </b><span class="p1">(<span class="default"><a href="cat_1.html#K12" title="CAT_1:func.12">Obj</a> <span class="p2">(<span class="default"><font color="Maroon" title="c5">S</font> <a href="cat_1.html#K14" title="CAT_1:func.14">*</a> <font color="Maroon" title="c4">T</font></span>)</span></span>)</span> <a href="funct_2.html#K3" title="FUNCT_2:func.3">.</a> <font color="Maroon" title="c6">b</font> = 
<font color="Maroon" title="c7">d</font>
<b>by </b><i><a class="txt" href="cat_1.html#E2:96"><i><font color="Green" title="E52">A1</font></i></a>, <a class="ref" href="cat_1.html#T103" target="_self" title="CAT_1:th.103">Th103</a></i>
<br/>.= 
<span class="p1">(<span class="default"><a href="cat_1.html#K12" title="CAT_1:func.12">Obj</a> <font color="Maroon" title="c5">S</font></span>)</span> <a href="funct_2.html#K3" title="FUNCT_2:func.3">.</a> <font color="Maroon" title="c8">c</font>
<b>by </b><i><a class="txt" href="cat_1.html#E2:96"><i><font color="Green" title="E52">A1</font></i></a>, <a class="txt" href="cat_1.html#E4:96"><i><font color="Green" title="E53">A2</font></i></a>, <a class="txt" href="cat_1.html#E5:96"><i><font color="Green" title="E54">A3</font></i></a>, <a class="ref" href="cat_1.html#T103" target="_self" title="CAT_1:th.103">Th103</a></i>
<br/>.= 
<span class="p1">(<span class="default"><a href="cat_1.html#K12" title="CAT_1:func.12">Obj</a> <font color="Maroon" title="c5">S</font></span>)</span> <a href="funct_2.html#K3" title="FUNCT_2:func.3">.</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="cat_1.html#K12" title="CAT_1:func.12">Obj</a> <font color="Maroon" title="c4">T</font></span>)</span> <a href="funct_2.html#K3" title="FUNCT_2:func.3">.</a> <font color="Maroon" title="c6">b</font></span>)</span>
<b>by </b><i><a class="txt" href="cat_1.html#E4:96"><i><font color="Green" title="E53">A2</font></i></a>, <a class="ref" href="cat_1.html#T103" target="_self" title="CAT_1:th.103">Th103</a></i>
;<br/>


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