<?xml version="1.0"?>
<div class="add">

<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">C1</font>, <font color="Maroon" title="c3">C2</font> be    <a href="cat_2.html#M3" title="CAT_2:mode.3">Subcategory</a> of <font color="Maroon" title="c1">C</font>;<br/>





<b>assume </b><a NAME="E1:14"/>
the <a href="cat_1.html#U1" title="CAT_1:sel.1">Objects</a> of <font color="Maroon" title="c2">C1</font> <a href="xboole_0.html#K3" title="XBOOLE_0:func.3">/\</a> the <a href="cat_1.html#U1" title="CAT_1:sel.1">Objects</a> of <font color="Maroon" title="c3">C2</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> 
 ; <i><font color="Red">:: according to </font></i><a class="ref" href="xboole_0.html#D7" title="XBOOLE_0:def.7">XBOOLE_0:def 7</a><br/>

<b>then reconsider </b><font color="Maroon" title="c4">O</font> = the <a href="cat_1.html#U1" title="CAT_1:sel.1">Objects</a> of <font color="Maroon" title="c2">C1</font> <a href="xboole_0.html#K3" title="XBOOLE_0:func.3">/\</a> the <a href="cat_1.html#U1" title="CAT_1:sel.1">Objects</a> of <font color="Maroon" title="c3">C2</font> as  non <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>  <a href="hidden.html#M1" title="HIDDEN:mode.1">set</a>  ;<br/>
<b>consider </b><font color="Maroon" title="c5">o</font> being    <a href="subset_1.html#M1" title="SUBSET_1:mode.1">Element</a> of <font color="Maroon" title="c4">O</font>;<br/>
<b>set </b><font color="Maroon" title="c6">C12</font> = <font color="Maroon" title="c2">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c3">C2</font>;<br/>
<b>set </b><font color="Maroon" title="c7">C21</font> = <font color="Maroon" title="c3">C2</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c2">C1</font>;<br/>
<b>set </b><font color="Maroon" title="c8">M1</font> = the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c2">C1</font>;<br/>
<b>set </b><font color="Maroon" title="c9">M2</font> = the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c3">C2</font>;<br/>
<b>set </b><font color="Maroon" title="c10">O1</font> = the <a href="cat_1.html#U1" title="CAT_1:sel.1">Objects</a> of <font color="Maroon" title="c2">C1</font>;<br/>
<b>set </b><font color="Maroon" title="c11">O2</font> = the <a href="cat_1.html#U1" title="CAT_1:sel.1">Objects</a> of <font color="Maroon" title="c3">C2</font>;<br/>
<a NAME="E4:14"/>
( <font color="Maroon" title="c5">o</font> is   <a href="cat_1.html#NM1" title="CAT_1:NM.1">Object</a> of <font color="Maroon" title="c2">C1</font> &amp; <font color="Maroon" title="c5">o</font> is   <a href="cat_1.html#NM1" title="CAT_1:NM.1">Object</a> of <font color="Maroon" title="c3">C2</font> )
 
<b>by </b><i><a class="ref" href="xboole_0.html#D3" title="XBOOLE_0:def.3">XBOOLE_0:def 3</a></i>;<br/>
<a NAME="E5:14"/><b>then </b><i><font color="Green" title="E8">A1</font></i>: 
( the <a href="cat_1.html#U1" title="CAT_1:sel.1">Objects</a> of <span class="p1">(<span class="default"><font color="Maroon" title="c2">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c3">C2</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c4">O</font> &amp; the <a href="cat_1.html#U1" title="CAT_1:sel.1">Objects</a> of <span class="p1">(<span class="default"><font color="Maroon" title="c3">C2</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c2">C1</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c4">O</font> &amp; the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <span class="p1">(<span class="default"><font color="Maroon" title="c2">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c3">C2</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c2">C1</font> <a href="xboole_0.html#K3" title="XBOOLE_0:func.3">/\</a> the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c3">C2</font> &amp; the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <span class="p1">(<span class="default"><font color="Maroon" title="c3">C2</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c2">C1</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c2">C1</font> <a href="xboole_0.html#K3" title="XBOOLE_0:func.3">/\</a> the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c3">C2</font> &amp; the <a href="cat_1.html#U3" title="CAT_1:sel.3">Dom</a> of <span class="p1">(<span class="default"><font color="Maroon" title="c3">C2</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c2">C1</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> the <a href="cat_1.html#U3" title="CAT_1:sel.3">Dom</a> of <font color="Maroon" title="c3">C2</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c2">C1</font> &amp; the <a href="cat_1.html#U3" title="CAT_1:sel.3">Dom</a> of <span class="p1">(<span class="default"><font color="Maroon" title="c2">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c3">C2</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> the <a href="cat_1.html#U3" title="CAT_1:sel.3">Dom</a> of <font color="Maroon" title="c2">C1</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c3">C2</font> &amp; the <a href="cat_1.html#U4" title="CAT_1:sel.4">Cod</a> of <span class="p1">(<span class="default"><font color="Maroon" title="c3">C2</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c2">C1</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> the <a href="cat_1.html#U4" title="CAT_1:sel.4">Cod</a> of <font color="Maroon" title="c3">C2</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c2">C1</font> &amp; the <a href="cat_1.html#U4" title="CAT_1:sel.4">Cod</a> of <span class="p1">(<span class="default"><font color="Maroon" title="c2">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c3">C2</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> the <a href="cat_1.html#U4" title="CAT_1:sel.4">Cod</a> of <font color="Maroon" title="c2">C1</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c3">C2</font> &amp; the <a href="cat_1.html#U6" title="CAT_1:sel.6">Id</a> of <span class="p1">(<span class="default"><font color="Maroon" title="c3">C2</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c2">C1</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> the <a href="cat_1.html#U6" title="CAT_1:sel.6">Id</a> of <font color="Maroon" title="c3">C2</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> the <a href="cat_1.html#U1" title="CAT_1:sel.1">Objects</a> of <font color="Maroon" title="c2">C1</font> &amp; the <a href="cat_1.html#U6" title="CAT_1:sel.6">Id</a> of <span class="p1">(<span class="default"><font color="Maroon" title="c2">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c3">C2</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> the <a href="cat_1.html#U6" title="CAT_1:sel.6">Id</a> of <font color="Maroon" title="c2">C1</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> the <a href="cat_1.html#U1" title="CAT_1:sel.1">Objects</a> of <font color="Maroon" title="c3">C2</font> &amp; the <a href="cat_1.html#U5" title="CAT_1:sel.5">Comp</a> of <span class="p1">(<span class="default"><font color="Maroon" title="c3">C2</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c2">C1</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> the <a href="cat_1.html#U5" title="CAT_1:sel.5">Comp</a> of <font color="Maroon" title="c3">C2</font> <a href="realset1.html#K1" title="REALSET1:func.1">||</a> the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c2">C1</font> &amp; the <a href="cat_1.html#U5" title="CAT_1:sel.5">Comp</a> of <span class="p1">(<span class="default"><font color="Maroon" title="c2">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c3">C2</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> the <a href="cat_1.html#U5" title="CAT_1:sel.5">Comp</a> of <font color="Maroon" title="c2">C1</font> <a href="realset1.html#K1" title="REALSET1:func.1">||</a> the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c3">C2</font> )
 
<b>by </b><i><a class="ref" href="cat_5.html#D2" target="_self" title="CAT_5:def.2">Def2</a></i>;<br/>
<a NAME="E6:14"/><i><font color="Green" title="E9">A2</font></i>: 
( the <a href="cat_1.html#U3" title="CAT_1:sel.3">Dom</a> of <font color="Maroon" title="c2">C1</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> the <a href="cat_1.html#U3" title="CAT_1:sel.3">Dom</a> of <font color="Maroon" title="c1">C</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c2">C1</font> &amp; the <a href="cat_1.html#U4" title="CAT_1:sel.4">Cod</a> of <font color="Maroon" title="c2">C1</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> the <a href="cat_1.html#U4" title="CAT_1:sel.4">Cod</a> of <font color="Maroon" title="c1">C</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c2">C1</font> &amp; the <a href="cat_1.html#U3" title="CAT_1:sel.3">Dom</a> of <font color="Maroon" title="c3">C2</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> the <a href="cat_1.html#U3" title="CAT_1:sel.3">Dom</a> of <font color="Maroon" title="c1">C</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c3">C2</font> &amp; the <a href="cat_1.html#U4" title="CAT_1:sel.4">Cod</a> of <font color="Maroon" title="c3">C2</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> the <a href="cat_1.html#U4" title="CAT_1:sel.4">Cod</a> of <font color="Maroon" title="c1">C</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c3">C2</font> )
 
<b>by </b><i><a class="ref" href="nattra_1.html#T8" title="NATTRA_1:th.8">NATTRA_1:8</a></i>;<br/>
<b>then </b><i><font color="Green" title="E10">A3</font></i>: the <a href="cat_1.html#U3" title="CAT_1:sel.3">Dom</a> of <span class="p1">(<span class="default"><font color="Maroon" title="c2">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c3">C2</font></span>)</span> = 
the <a href="cat_1.html#U3" title="CAT_1:sel.3">Dom</a> of <font color="Maroon" title="c1">C</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <span class="p1">(<span class="default">the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c2">C1</font> <a href="xboole_0.html#K3" title="XBOOLE_0:func.3">/\</a> the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c3">C2</font></span>)</span>
<b>by </b><i><a class="txt" href="cat_5.html#E5:14"><i><font color="Green" title="E8">A1</font></i></a>, <a class="ref" href="relat_1.html#T100" title="RELAT_1:th.100">RELAT_1:100</a></i>
<br/>.= 
the <a href="cat_1.html#U3" title="CAT_1:sel.3">Dom</a> of <span class="p1">(<span class="default"><font color="Maroon" title="c3">C2</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c2">C1</font></span>)</span>
<b>by </b><i><a class="txt" href="cat_5.html#E5:14"><i><font color="Green" title="E8">A1</font></i></a>, <a class="txt" href="cat_5.html#E6:14"><i><font color="Green" title="E9">A2</font></i></a>, <a class="ref" href="relat_1.html#T100" title="RELAT_1:th.100">RELAT_1:100</a></i>
;<br/>
<i><font color="Green" title="E11">A4</font></i>: the <a href="cat_1.html#U4" title="CAT_1:sel.4">Cod</a> of <span class="p1">(<span class="default"><font color="Maroon" title="c2">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c3">C2</font></span>)</span> = 
the <a href="cat_1.html#U4" title="CAT_1:sel.4">Cod</a> of <font color="Maroon" title="c1">C</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <span class="p1">(<span class="default">the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c2">C1</font> <a href="xboole_0.html#K3" title="XBOOLE_0:func.3">/\</a> the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c3">C2</font></span>)</span>
<b>by </b><i><a class="txt" href="cat_5.html#E5:14"><i><font color="Green" title="E8">A1</font></i></a>, <a class="txt" href="cat_5.html#E6:14"><i><font color="Green" title="E9">A2</font></i></a>, <a class="ref" href="relat_1.html#T100" title="RELAT_1:th.100">RELAT_1:100</a></i>
<br/>.= 
the <a href="cat_1.html#U4" title="CAT_1:sel.4">Cod</a> of <span class="p1">(<span class="default"><font color="Maroon" title="c3">C2</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c2">C1</font></span>)</span>
<b>by </b><i><a class="txt" href="cat_5.html#E5:14"><i><font color="Green" title="E8">A1</font></i></a>, <a class="txt" href="cat_5.html#E6:14"><i><font color="Green" title="E9">A2</font></i></a>, <a class="ref" href="relat_1.html#T100" title="RELAT_1:th.100">RELAT_1:100</a></i>
;<br/>
<i><font color="Green" title="E12">A5</font></i>: the <a href="cat_1.html#U5" title="CAT_1:sel.5">Comp</a> of <span class="p1">(<span class="default"><font color="Maroon" title="c2">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c3">C2</font></span>)</span> = 
<span class="p1">(<span class="default">the <a href="cat_1.html#U5" title="CAT_1:sel.5">Comp</a> of <font color="Maroon" title="c1">C</font> <a href="realset1.html#K1" title="REALSET1:func.1">||</a> the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c2">C1</font></span>)</span> <a href="realset1.html#K1" title="REALSET1:func.1">||</a> the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c3">C2</font>
<b>by </b><i><a class="txt" href="cat_5.html#E5:14"><i><font color="Green" title="E8">A1</font></i></a>, <a class="ref" href="nattra_1.html#T8" title="NATTRA_1:th.8">NATTRA_1:8</a></i>
<br/>.= 
the <a href="cat_1.html#U5" title="CAT_1:sel.5">Comp</a> of <font color="Maroon" title="c1">C</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <span class="p1">(<span class="default"><span class="p2"><a href="zfmisc_1.html#K2" title="ZFMISC_1:func.2">[:</a><span class="default">the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c2">C1</font>,the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c2">C1</font></span><a href="zfmisc_1.html#K2" title="ZFMISC_1:func.2">:]</a></span> <a href="xboole_0.html#K3" title="XBOOLE_0:func.3">/\</a> <span class="p2"><a href="zfmisc_1.html#K2" title="ZFMISC_1:func.2">[:</a><span class="default">the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c3">C2</font>,the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c3">C2</font></span><a href="zfmisc_1.html#K2" title="ZFMISC_1:func.2">:]</a></span></span>)</span>
<b>by </b><i><a class="ref" href="relat_1.html#T100" title="RELAT_1:th.100">RELAT_1:100</a></i>
<br/>.= 
<span class="p1">(<span class="default">the <a href="cat_1.html#U5" title="CAT_1:sel.5">Comp</a> of <font color="Maroon" title="c1">C</font> <a href="realset1.html#K1" title="REALSET1:func.1">||</a> the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c3">C2</font></span>)</span> <a href="realset1.html#K1" title="REALSET1:func.1">||</a> the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c2">C1</font>
<b>by </b><i><a class="ref" href="relat_1.html#T100" title="RELAT_1:th.100">RELAT_1:100</a></i>
<br/>.= 
the <a href="cat_1.html#U5" title="CAT_1:sel.5">Comp</a> of <span class="p1">(<span class="default"><font color="Maroon" title="c3">C2</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c2">C1</font></span>)</span>
<b>by </b><i><a class="txt" href="cat_5.html#E5:14"><i><font color="Green" title="E8">A1</font></i></a>, <a class="ref" href="nattra_1.html#T8" title="NATTRA_1:th.8">NATTRA_1:8</a></i>
;<br/>
the <a href="cat_1.html#U6" title="CAT_1:sel.6">Id</a> of <span class="p1">(<span class="default"><font color="Maroon" title="c2">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c3">C2</font></span>)</span> = 
<span class="p1">(<span class="default">the <a href="cat_1.html#U6" title="CAT_1:sel.6">Id</a> of <font color="Maroon" title="c1">C</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> the <a href="cat_1.html#U1" title="CAT_1:sel.1">Objects</a> of <font color="Maroon" title="c2">C1</font></span>)</span> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> the <a href="cat_1.html#U1" title="CAT_1:sel.1">Objects</a> of <font color="Maroon" title="c3">C2</font>
<b>by </b><i><a class="txt" href="cat_5.html#E5:14"><i><font color="Green" title="E8">A1</font></i></a>, <a class="ref" href="nattra_1.html#T8" title="NATTRA_1:th.8">NATTRA_1:8</a></i>
<br/>.= 
the <a href="cat_1.html#U6" title="CAT_1:sel.6">Id</a> of <font color="Maroon" title="c1">C</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <span class="p1">(<span class="default">the <a href="cat_1.html#U1" title="CAT_1:sel.1">Objects</a> of <font color="Maroon" title="c2">C1</font> <a href="xboole_0.html#K3" title="XBOOLE_0:func.3">/\</a> the <a href="cat_1.html#U1" title="CAT_1:sel.1">Objects</a> of <font color="Maroon" title="c3">C2</font></span>)</span>
<b>by </b><i><a class="ref" href="relat_1.html#T100" title="RELAT_1:th.100">RELAT_1:100</a></i>
<br/>.= 
<span class="p1">(<span class="default">the <a href="cat_1.html#U6" title="CAT_1:sel.6">Id</a> of <font color="Maroon" title="c1">C</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> the <a href="cat_1.html#U1" title="CAT_1:sel.1">Objects</a> of <font color="Maroon" title="c3">C2</font></span>)</span> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> the <a href="cat_1.html#U1" title="CAT_1:sel.1">Objects</a> of <font color="Maroon" title="c2">C1</font>
<b>by </b><i><a class="ref" href="relat_1.html#T100" title="RELAT_1:th.100">RELAT_1:100</a></i>
<br/>.= 
the <a href="cat_1.html#U6" title="CAT_1:sel.6">Id</a> of <span class="p1">(<span class="default"><font color="Maroon" title="c3">C2</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c2">C1</font></span>)</span>
<b>by </b><i><a class="txt" href="cat_5.html#E5:14"><i><font color="Green" title="E8">A1</font></i></a>, <a class="ref" href="nattra_1.html#T8" title="NATTRA_1:th.8">NATTRA_1:8</a></i>
;<br/>
<b>hence </b><a NAME="E11:14"/>
<font color="Maroon" title="c2">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c3">C2</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c3">C2</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c2">C1</font>
 <b>by </b><i><a class="txt" href="cat_5.html#E5:14"><i><font color="Green" title="E8">A1</font></i></a>, <a class="txt" href="cat_5.html#E7:14"><i><font color="Green" title="E10">A3</font></i></a>, <a class="txt" href="cat_5.html#E8:14"><i><font color="Green" title="E11">A4</font></i></a>, <a class="txt" href="cat_5.html#E9:14"><i><font color="Green" title="E12">A5</font></i></a></i>;<br/>


</div>
