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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">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="E1:15"/><i><font color="Green" title="E9">A1</font></i>: 
the <a href="cat_1.html#U1" title="CAT_1:sel.1">Objects</a> of <font color="Maroon" title="c2">C1</font> <a href="subset_1.html#R2" title="SUBSET_1:pred.2">meets</a> 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="E2:15"/><b>then </b><i><font color="Green" title="E10">A2</font></i>: 
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> 
 
<b>by </b><i><a class="ref" href="xboole_0.html#D7" title="XBOOLE_0:def.7">XBOOLE_0:def 7</a></i>;<br/>
<a NAME="E3:15"/><i><font color="Green" title="E11">A3</font></i>: 
<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#E1:15"><i><font color="Green" title="E9">A1</font></i></a>, <a class="ref" href="cat_5.html#T5" target="_self" title="CAT_5:th.5">Th5</a></i>;<br/>
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="15_1"><b>now </b></a><div class="add"><b>let </b><font color="Maroon" title="c4">C1</font>, <font color="Maroon" title="c5">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="E1:15_1"/><i><font color="Green" title="E12">A4</font></i>: 
the <a href="cat_1.html#U1" title="CAT_1:sel.1">Objects</a> of <font color="Maroon" title="c4">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="c5">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> 
 ;<br/><a NAME="E2:15_1"/><i><font color="Green" title="E13">A5</font></i>: 
( the <a href="cat_1.html#U1" title="CAT_1:sel.1">Objects</a> of <font color="Maroon" title="c4">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="c5">C2</font> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a> the <a href="cat_1.html#U1" title="CAT_1:sel.1">Objects</a> of <font color="Maroon" title="c4">C1</font> &amp; the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c4">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="c5">C2</font> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a> the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c4">C1</font> )
 <b>by </b><i><a class="ref" href="xboole_1.html#T17" title="XBOOLE_1:th.17">XBOOLE_1:17</a></i>;<br/><b>reconsider </b><font color="Maroon" title="c6">O</font> = the <a href="cat_1.html#U1" title="CAT_1:sel.1">Objects</a> of <font color="Maroon" title="c4">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="c5">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>  <b>by </b><i><a class="txt" href="cat_5.html#E1:15_1"><i><font color="Green" title="E12">A4</font></i></a></i>;<br/><b>consider </b><font color="Maroon" title="c7">o</font> being    <a href="subset_1.html#M1" title="SUBSET_1:mode.1">Element</a> of <font color="Maroon" title="c6">O</font>;<br/><a NAME="E5:15_1"/>
( <font color="Maroon" title="c7">o</font> is   <a href="cat_1.html#NM1" title="CAT_1:NM.1">Object</a> of <font color="Maroon" title="c4">C1</font> &amp; <font color="Maroon" title="c7">o</font> is   <a href="cat_1.html#NM1" title="CAT_1:NM.1">Object</a> of <font color="Maroon" title="c5">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="E6:15_1"/><b>then </b><i><font color="Green" title="E14">A6</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="c4">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c5">C2</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> the <a href="cat_1.html#U1" title="CAT_1:sel.1">Objects</a> of <font color="Maroon" title="c4">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="c5">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="c4">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c5">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="c4">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="c5">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="c4">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c5">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="c4">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="c5">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="c4">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c5">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="c4">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="c5">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="c4">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c5">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="c4">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="c5">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="c4">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c5">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="c4">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="c5">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="E7:15_1"/>
( the <a href="cat_1.html#U3" title="CAT_1:sel.3">Dom</a> of <font color="Maroon" title="c4">C1</font> <a href="relset_1.html#R2" title="RELSET_1:pred.2">=</a> the <a href="cat_1.html#U3" title="CAT_1:sel.3">Dom</a> of <font color="Maroon" title="c4">C1</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <span class="p1">(<span class="default"><a href="relset_1.html#K4" title="RELSET_1:func.4">dom</a> the <a href="cat_1.html#U3" title="CAT_1:sel.3">Dom</a> of <font color="Maroon" title="c4">C1</font></span>)</span> &amp;  <a href="relset_1.html#K4" title="RELSET_1:func.4">dom</a> the <a href="cat_1.html#U3" title="CAT_1:sel.3">Dom</a> of <font color="Maroon" title="c4">C1</font> <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="c4">C1</font> )
 <b>by </b><i><a class="ref" href="funct_2.html#D1" title="FUNCT_2:def.1">FUNCT_2:def 1</a>, <a class="ref" href="relat_1.html#T97" title="RELAT_1:th.97">RELAT_1:97</a></i>;<br/><a NAME="E8:15_1"/><b>then </b><i><font color="Green" title="E15">A7</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="c4">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c5">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="c4">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 <span class="p1">(<span class="default"><font color="Maroon" title="c4">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c5">C2</font></span>)</span>
 <b>by </b><i><a class="txt" href="cat_5.html#E6:15_1"><i><font color="Green" title="E14">A6</font></i></a>, <a class="ref" href="relat_1.html#T100" title="RELAT_1:th.100">RELAT_1:100</a></i>;<br/><a NAME="E9:15_1"/>
( the <a href="cat_1.html#U4" title="CAT_1:sel.4">Cod</a> of <font color="Maroon" title="c4">C1</font> <a href="relset_1.html#R2" title="RELSET_1:pred.2">=</a> the <a href="cat_1.html#U4" title="CAT_1:sel.4">Cod</a> of <font color="Maroon" title="c4">C1</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <span class="p1">(<span class="default"><a href="relset_1.html#K4" title="RELSET_1:func.4">dom</a> the <a href="cat_1.html#U4" title="CAT_1:sel.4">Cod</a> of <font color="Maroon" title="c4">C1</font></span>)</span> &amp;  <a href="relset_1.html#K4" title="RELSET_1:func.4">dom</a> the <a href="cat_1.html#U4" title="CAT_1:sel.4">Cod</a> of <font color="Maroon" title="c4">C1</font> <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="c4">C1</font> )
 <b>by </b><i><a class="ref" href="funct_2.html#D1" title="FUNCT_2:def.1">FUNCT_2:def 1</a>, <a class="ref" href="relat_1.html#T97" title="RELAT_1:th.97">RELAT_1:97</a></i>;<br/><a NAME="E10:15_1"/><b>then </b><i><font color="Green" title="E16">A8</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="c4">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c5">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="c4">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 <span class="p1">(<span class="default"><font color="Maroon" title="c4">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c5">C2</font></span>)</span>
 <b>by </b><i><a class="txt" href="cat_5.html#E6:15_1"><i><font color="Green" title="E14">A6</font></i></a>, <a class="ref" href="relat_1.html#T100" title="RELAT_1:th.100">RELAT_1:100</a></i>;<br/><a NAME="E11:15_1"/>
( the <a href="cat_1.html#U6" title="CAT_1:sel.6">Id</a> of <font color="Maroon" title="c4">C1</font> <a href="relset_1.html#R2" title="RELSET_1:pred.2">=</a> the <a href="cat_1.html#U6" title="CAT_1:sel.6">Id</a> of <font color="Maroon" title="c4">C1</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <span class="p1">(<span class="default"><a href="relset_1.html#K4" title="RELSET_1:func.4">dom</a> the <a href="cat_1.html#U6" title="CAT_1:sel.6">Id</a> of <font color="Maroon" title="c4">C1</font></span>)</span> &amp;  <a href="relset_1.html#K4" title="RELSET_1:func.4">dom</a> the <a href="cat_1.html#U6" title="CAT_1:sel.6">Id</a> of <font color="Maroon" title="c4">C1</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> the <a href="cat_1.html#U1" title="CAT_1:sel.1">Objects</a> of <font color="Maroon" title="c4">C1</font> )
 <b>by </b><i><a class="ref" href="funct_2.html#D1" title="FUNCT_2:def.1">FUNCT_2:def 1</a>, <a class="ref" href="relat_1.html#T97" title="RELAT_1:th.97">RELAT_1:97</a></i>;<br/><a NAME="E12:15_1"/><b>then </b><i><font color="Green" title="E17">A9</font></i>: 
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="c4">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c5">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="c4">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 <span class="p1">(<span class="default"><font color="Maroon" title="c4">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c5">C2</font></span>)</span>
 <b>by </b><i><a class="txt" href="cat_5.html#E6:15_1"><i><font color="Green" title="E14">A6</font></i></a>, <a class="ref" href="relat_1.html#T100" title="RELAT_1:th.100">RELAT_1:100</a></i>;<br/><a NAME="E13:15_1"/>
 <a href="relset_1.html#K4" title="RELSET_1:func.4">dom</a> the <a href="cat_1.html#U5" title="CAT_1:sel.5">Comp</a> of <font color="Maroon" title="c4">C1</font> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a> <span class="p1"><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="c4">C1</font>,the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c4">C1</font></span><a href="zfmisc_1.html#K2" title="ZFMISC_1:func.2">:]</a></span>
 ;<br/><a NAME="E14:15_1"/><b>then </b>
the <a href="cat_1.html#U5" title="CAT_1:sel.5">Comp</a> of <font color="Maroon" title="c4">C1</font> <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="c4">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="c4">C1</font>
 <b>by </b><i><a class="ref" href="relat_1.html#T97" title="RELAT_1:th.97">RELAT_1:97</a></i>;<br/><a NAME="E15:15_1"/><b>then </b>
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="c4">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c5">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="c4">C1</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="c4">C1</font>,the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c4">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="c5">C2</font>,the <a href="cat_1.html#U2" title="CAT_1:sel.2">Morphisms</a> of <font color="Maroon" title="c5">C2</font></span><a href="zfmisc_1.html#K2" title="ZFMISC_1:func.2">:]</a></span></span>)</span>
 <b>by </b><i><a class="txt" href="cat_5.html#E6:15_1"><i><font color="Green" title="E14">A6</font></i></a>, <a class="ref" href="relat_1.html#T100" title="RELAT_1:th.100">RELAT_1:100</a></i>;<br/><a NAME="E16:15_1"/><b>then </b>
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="c4">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c5">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="c4">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 <span class="p1">(<span class="default"><font color="Maroon" title="c4">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c5">C2</font></span>)</span>
 <b>by </b><i><a class="txt" href="cat_5.html#E6:15_1"><i><font color="Green" title="E14">A6</font></i></a>, <a class="ref" href="zfmisc_1.html#T123" title="ZFMISC_1:th.123">ZFMISC_1:123</a></i>;<br/><b>hence </b><a NAME="E17:15_1"/>
<font color="Maroon" title="c4">C1</font> <a href="cat_5.html#K6" title="CAT_5:func.6">/\</a> <font color="Maroon" title="c5">C2</font> is    <a href="cat_2.html#M3" title="CAT_2:mode.3">Subcategory</a> of <font color="Maroon" title="c4">C1</font>
 <b>by </b><i><a class="txt" href="cat_5.html#E2:15_1"><i><font color="Green" title="E13">A5</font></i></a>, <a class="txt" href="cat_5.html#E6:15_1"><i><font color="Green" title="E14">A6</font></i></a>, <a class="txt" href="cat_5.html#E8:15_1"><i><font color="Green" title="E15">A7</font></i></a>, <a class="txt" href="cat_5.html#E10:15_1"><i><font color="Green" title="E16">A8</font></i></a>, <a class="txt" href="cat_5.html#E12:15_1"><i><font color="Green" title="E17">A9</font></i></a>, <a class="ref" href="nattra_1.html#T9" title="NATTRA_1:th.9">NATTRA_1:9</a></i>;<br/></div><b>end;</b></div>
<b>hence </b><a NAME="E5:15"/>
( <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> is    <a href="cat_2.html#M3" title="CAT_2:mode.3">Subcategory</a> of <font color="Maroon" title="c2">C1</font> &amp; <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> is    <a href="cat_2.html#M3" title="CAT_2:mode.3">Subcategory</a> of <font color="Maroon" title="c3">C2</font> )
 <b>by </b><i><a class="txt" href="cat_5.html#E2:15"><i><font color="Green" title="E10">A2</font></i></a>, <a class="txt" href="cat_5.html#E3:15"><i><font color="Green" title="E11">A3</font></i></a></i>;<br/>


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