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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">a</font> be   <a href="cat_1.html#NM1">Object</a> of <font color="Maroon">C</font>;<br/><b>let </b><font color="Maroon">F</font> be   <a href="funct_2.html#NM1">Function</a> of  <a href="xboole_0.html#K1">{}</a> ,the <a href="cat_1.html#U2">Morphisms</a> of <font color="Maroon">C</font>;<br/>





<b>thus </b><a NAME="E1:56"/>
<a href="xboole_0.html#K1">{}</a>  <a href="cat_3.html#K1" target="_self">--&gt;</a> <font color="Maroon">a</font> <a href="funct_2.html#R2">=</a>  <a href="cat_3.html#K3" target="_self">doms</a> <font color="Maroon">F</font>
 <b>by </b><i><a class="ref" href="partfun1.html#T57">PARTFUN1:57</a></i>; <i><font color="Red">:: according to </font></i><a class="ref" href="cat_3.html#D14" target="_self">CAT_3:def 14</a><br/>


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