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<b>let </b><font color="Maroon">x</font> be    <a href="subset_1.html#M1">Element</a> of  <a href="cat_2.html#K5" target="_self">Funct</a> <font color="Maroon">C</font>,<font color="Maroon">D</font>; <i><font color="Red">:: according to </font></i><a class="ref" href="cat_2.html#D3" target="_self">CAT_2:def 3</a><br/>

<b>thus </b><a NAME="E1:14_1_1"/>
<font color="Maroon">x</font> is    <a href="cat_1.html#M2">Functor</a> of <font color="Maroon">C</font>,<font color="Maroon">D</font>
 <b>by </b><i/>;<br/>


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