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<b>let </b><font color="Maroon">C</font> be   <a href="cat_1.html#NM4">Category</a>;<br/><b>let </b><font color="Maroon">I</font> be   <a href="index_1.html#NM9">Indexing</a> of <font color="Maroon">C</font>;<br/><b>let </b><font color="Maroon">D</font> be    <a href="index_1.html#M4" target="_self">TargetCat</a> of <font color="Maroon">I</font>;<br/><b>let </b><font color="Maroon">J</font> be   <a href="index_1.html#NM9">Indexing</a> of <font color="Maroon">D</font>;<br/><b>let </b><font color="Maroon">E</font> be    <a href="index_1.html#M4" target="_self">TargetCat</a> of <font color="Maroon">J</font>;<br/><b>let </b><font color="Maroon">K</font> be   <a href="index_1.html#NM9">Indexing</a> of <font color="Maroon">E</font>;<br/>











<b>thus </b><span class="p1">(<span class="default"><font color="Maroon">K</font> <a href="index_1.html#K22" target="_self">*</a> <font color="Maroon">J</font></span>)</span> <a href="index_1.html#K22" target="_self">*</a> <font color="Maroon">I</font> = 
<span class="p1">(<span class="default"><font color="Maroon">K</font> <a href="index_1.html#K22" target="_self">*</a> <font color="Maroon">J</font></span>)</span> <a href="index_1.html#K20" target="_self">*</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">D</font></span>)</span>
<b>by </b><i/>
<br/>.= 
<font color="Maroon">K</font> <a href="index_1.html#K22" target="_self">*</a> <span class="p1">(<span class="default"><font color="Maroon">J</font> <a href="index_1.html#K20" target="_self">*</a> <span class="p2">(<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">D</font></span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="index_1.html#D2" target="_self">Def2</a></i>
<br/>.= 
<font color="Maroon">K</font> <a href="index_1.html#K22" target="_self">*</a> <span class="p1">(<span class="default"><font color="Maroon">J</font> <a href="index_1.html#K22" target="_self">*</a> <font color="Maroon">I</font></span>)</span>
<b>by </b><i/>
;<br/>


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