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<b>let </b><font color="Maroon" title="c1">C</font> be   <a href="cat_1.html#NM4" title="CAT_1:NM.4">Category</a>;<br/><b>let </b><font color="Maroon" title="c2">a</font> be   <a href="cat_1.html#NM1" title="CAT_1:NM.1">Object</a> of <font color="Maroon" title="c1">C</font>;<br/><b>let </b><font color="Maroon" title="c3">F</font> be   <a href="funct_2.html#NM1" title="FUNCT_2:NM.1">Function</a> of  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> ,the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c1">C</font>;<br/>





<b>thus </b><a NAME="E1:80"/>
<a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  <a href="cat_3.html#K1" title="CAT_3:func.1">--&gt;</a> <font color="Maroon" title="c2">a</font> <a href="funct_2.html#R2" title="FUNCT_2:pred.2">=</a>  <a href="cat_3.html#K4" title="CAT_3:func.4">cods</a> <font color="Maroon" title="c3">F</font>
 <b>by </b><i><a class="ref" href="partfun1.html#T57" title="PARTFUN1:th.57">PARTFUN1:57</a></i>; <i><font color="Red">:: according to </font></i><a class="ref" href="cat_3.html#D17" target="_self" title="CAT_3:def.17">CAT_3:def 17</a><br/>


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