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<b>take </b>
 <a href="cat_2.html#K5" target="_self">Funct</a> <font color="Maroon">c<sub>1</sub></font>,<font color="Maroon">c<sub>2</sub></font>
;<br/>

<b>thus </b><a NAME="E1:11_1_1"/>
for <font color="Olive">b<sub>1</sub></font> being   <a href="subset_1.html#M1">Element</a> of  <a href="cat_2.html#K5" target="_self">Funct</a> <font color="Maroon">c<sub>1</sub></font>,<font color="Maroon">c<sub>2</sub></font> holds <font color="Olive">b<sub>1</sub></font> is    <a href="cat_1.html#M2">Functor</a> of <font color="Maroon">c<sub>1</sub></font>,<font color="Maroon">c<sub>2</sub></font>
 <b>by </b><i><a class="ref" href="cat_2.html#D2" target="_self">Def2</a></i>;<br/>


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