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<b>let </b><font color="Maroon">T1</font> be  <a href="cat_1.html#V1">strict</a>  <a href="index_1.html#M4" target="_self">TargetCat</a> of <font color="Maroon">I</font>, <font color="Maroon">T2</font> be  <a href="cat_1.html#V1">strict</a>  <a href="index_1.html#M4" target="_self">TargetCat</a> of <font color="Maroon">I</font>;<br/>

<b>assume </b><b>that </b><br/><a NAME="E1:47_1_1"/><i><font color="Green">E23</font></i>: 
for <font color="Olive">T</font> being   <a href="index_1.html#M4" target="_self">TargetCat</a> of <font color="Maroon">I</font> holds  <font color="Maroon">T1</font> <a href="hidden.html#R1">=</a>  <a href="cat_5.html#K7">Image</a> <span class="p1">(<span class="default"><font color="Maroon">I</font> <a href="index_1.html#K15" target="_self">-functor</a> <font color="Maroon">C</font>,<font color="Olive">T</font></span>)</span>
 <b>and </b><br/><a NAME="E2:47_1_1"/><i><font color="Green">E26</font></i>: 
for <font color="Olive">T</font> being   <a href="index_1.html#M4" target="_self">TargetCat</a> of <font color="Maroon">I</font> holds  <font color="Maroon">T2</font> <a href="hidden.html#R1">=</a>  <a href="cat_5.html#K7">Image</a> <span class="p1">(<span class="default"><font color="Maroon">I</font> <a href="index_1.html#K15" target="_self">-functor</a> <font color="Maroon">C</font>,<font color="Olive">T</font></span>)</span>
 ;<br/>

<b>consider </b><font color="Maroon">T</font> being    <a href="index_1.html#M4" target="_self">TargetCat</a> of <font color="Maroon">I</font>;<br/>
<b>thus </b><font color="Maroon">T1</font> = 
 <a href="cat_5.html#K7">Image</a> <span class="p1">(<span class="default"><font color="Maroon">I</font> <a href="index_1.html#K15" target="_self">-functor</a> <font color="Maroon">C</font>,<font color="Maroon">T</font></span>)</span>
<b>by </b><i/>
<br/>.= 
<font color="Maroon">T2</font>
<b>by </b><i/>
;<br/>


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