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

<b>let </b><font color="Maroon" title="c1">G</font>, <font color="Maroon" title="c2">H</font> be   <a href="glib_000.html#NM2" title="GLIB_000:NM.2">_Graph</a>;<br/><b>let </b><font color="Maroon" title="c3">A</font>, <font color="Maroon" title="c4">B</font>, <font color="Maroon" title="c5">C</font> be    <a href="hidden.html#M1" title="HIDDEN:mode.1">set</a> ;<br/><b>let </b><font color="Maroon" title="c6">G1</font> be   <a href="glib_000.html#NM5" title="GLIB_000:NM.5">inducedSubgraph</a> of <font color="Maroon" title="c1">G</font>,<font color="Maroon" title="c3">A</font>;<br/><b>let </b><font color="Maroon" title="c7">H1</font> be   <a href="glib_000.html#NM5" title="GLIB_000:NM.5">inducedSubgraph</a> of <font color="Maroon" title="c2">H</font>,<font color="Maroon" title="c4">B</font>;<br/><b>let </b><font color="Maroon" title="c8">G2</font> be   <a href="glib_000.html#NM5" title="GLIB_000:NM.5">inducedSubgraph</a> of <font color="Maroon" title="c6">G1</font>,<font color="Maroon" title="c5">C</font>;<br/><b>let </b><font color="Maroon" title="c9">H2</font> be   <a href="glib_000.html#NM5" title="GLIB_000:NM.5">inducedSubgraph</a> of <font color="Maroon" title="c7">H1</font>,<font color="Maroon" title="c5">C</font>;<br/>











<b>assume </b><b>that </b><br/><a NAME="E1:29"/><i><font color="Green" title="E20">A1</font></i>: 
<font color="Maroon" title="c1">G</font> <a href="glib_000.html#R5" title="GLIB_000:pred.5">==</a> <font color="Maroon" title="c2">H</font>
 <b>and </b><br/><a NAME="E2:29"/><i><font color="Green" title="E21">A2</font></i>: 
( <font color="Maroon" title="c3">A</font> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a> <font color="Maroon" title="c4">B</font> &amp; <font color="Maroon" title="c5">C</font> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a> <font color="Maroon" title="c3">A</font> )
 <b>and </b><br/><a NAME="E3:29"/><i><font color="Green" title="E22">A3</font></i>: 
<font color="Maroon" title="c5">C</font> is  non <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <span class="p1">(<span class="default"><a href="glib_000.html#K6" title="GLIB_000:func.6">the_Vertices_of</a> <font color="Maroon" title="c1">G</font></span>)</span>
 ;<br/>

<a NAME="E4:29"/><i><font color="Green" title="E23">A4</font></i>: 
 <a href="glib_000.html#K6" title="GLIB_000:func.6">the_Vertices_of</a> <font color="Maroon" title="c1">G</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="glib_000.html#K6" title="GLIB_000:func.6">the_Vertices_of</a> <font color="Maroon" title="c2">H</font>
 
<b>by </b><i><a class="txt" href="lexbfs.html#E1:29"><i><font color="Green" title="E20">A1</font></i></a>, <a class="ref" href="glib_000.html#D36" title="GLIB_000:def.36">GLIB_000:def 36</a></i>;<br/>
<a NAME="E5:29"/><i><font color="Green" title="E24">A5</font></i>: 
<font color="Maroon" title="c5">C</font> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a> <font color="Maroon" title="c4">B</font>
 
<b>by </b><i><a class="txt" href="lexbfs.html#E2:29"><i><font color="Green" title="E21">A2</font></i></a>, <a class="ref" href="xboole_1.html#T1" title="XBOOLE_1:th.1">XBOOLE_1:1</a></i>;<br/>
<div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="29_1"><b>per </b></a><a class="txt" onclick="hs(this)" href="javascript:()"><b>cases </b></a><span class="hide"><a NAME="E1:29_1"/>
( ( <font color="Maroon" title="c3">A</font> is  non <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <span class="p1">(<span class="default"><a href="glib_000.html#K6" title="GLIB_000:func.6">the_Vertices_of</a> <font color="Maroon" title="c1">G</font></span>)</span> &amp; <font color="Maroon" title="c4">B</font> is  non <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <span class="p1">(<span class="default"><a href="glib_000.html#K6" title="GLIB_000:func.6">the_Vertices_of</a> <font color="Maroon" title="c1">G</font></span>)</span> ) or ( <font color="Maroon" title="c3">A</font> is  not  non <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <span class="p1">(<span class="default"><a href="glib_000.html#K6" title="GLIB_000:func.6">the_Vertices_of</a> <font color="Maroon" title="c1">G</font></span>)</span> &amp; <font color="Maroon" title="c4">B</font> is  non <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <span class="p1">(<span class="default"><a href="glib_000.html#K6" title="GLIB_000:func.6">the_Vertices_of</a> <font color="Maroon" title="c1">G</font></span>)</span> ) or ( <font color="Maroon" title="c3">A</font> is  non <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <span class="p1">(<span class="default"><a href="glib_000.html#K6" title="GLIB_000:func.6">the_Vertices_of</a> <font color="Maroon" title="c1">G</font></span>)</span> &amp; <font color="Maroon" title="c4">B</font> is  not  non <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <span class="p1">(<span class="default"><a href="glib_000.html#K6" title="GLIB_000:func.6">the_Vertices_of</a> <font color="Maroon" title="c1">G</font></span>)</span> ) or ( <font color="Maroon" title="c3">A</font> is  not  non <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <span class="p1">(<span class="default"><a href="glib_000.html#K6" title="GLIB_000:func.6">the_Vertices_of</a> <font color="Maroon" title="c1">G</font></span>)</span> &amp; <font color="Maroon" title="c4">B</font> is  not  non <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <span class="p1">(<span class="default"><a href="glib_000.html#K6" title="GLIB_000:func.6">the_Vertices_of</a> <font color="Maroon" title="c1">G</font></span>)</span> ) )
 </span>;<br/><div class="add"><div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="29_1_1"><b>suppose </b></a><a NAME="E1:29_1_1"/><i><font color="Green" title="E25">A6</font></i>: 
( <font color="Maroon" title="c3">A</font> is  non <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <span class="p1">(<span class="default"><a href="glib_000.html#K6" title="GLIB_000:func.6">the_Vertices_of</a> <font color="Maroon" title="c1">G</font></span>)</span> &amp; <font color="Maroon" title="c4">B</font> is  non <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <span class="p1">(<span class="default"><a href="glib_000.html#K6" title="GLIB_000:func.6">the_Vertices_of</a> <font color="Maroon" title="c1">G</font></span>)</span> )
 ;<br/><div class="add"><a NAME="E2:29_1_1"/><b>then </b><i><font color="Green" title="E26">A7</font></i>: 
<font color="Maroon" title="c8">G2</font> is   <a href="glib_000.html#NM5" title="GLIB_000:NM.5">inducedSubgraph</a> of <font color="Maroon" title="c1">G</font>,<font color="Maroon" title="c5">C</font>
 <b>by </b><i><a class="txt" href="lexbfs.html#E2:29"><i><font color="Green" title="E21">A2</font></i></a>, <a class="txt" href="lexbfs.html#E3:29"><i><font color="Green" title="E22">A3</font></i></a>, <a class="ref" href="chord.html#T29" title="CHORD:th.29">CHORD:29</a></i>;<br/><a NAME="E3:29_1_1"/><i><font color="Green" title="E27">A8</font></i>: 
<font color="Maroon" title="c9">H2</font> is   <a href="glib_000.html#NM5" title="GLIB_000:NM.5">inducedSubgraph</a> of <font color="Maroon" title="c2">H</font>,<font color="Maroon" title="c5">C</font>
 <b>by </b><i><a class="txt" href="lexbfs.html#E3:29"><i><font color="Green" title="E22">A3</font></i></a>, <a class="txt" href="lexbfs.html#E4:29"><i><font color="Green" title="E23">A4</font></i></a>, <a class="txt" href="lexbfs.html#E5:29"><i><font color="Green" title="E24">A5</font></i></a>, <a class="txt" href="lexbfs.html#E1:29_1_1"><i><font color="Green" title="E25">A6</font></i></a>, <a class="ref" href="chord.html#T29" title="CHORD:th.29">CHORD:29</a></i>;<br/><a NAME="E4:29_1_1"/>
<font color="Maroon" title="c1">G</font> <a href="glib_000.html#K22" title="GLIB_000:func.22">.edgesBetween</a> <font color="Maroon" title="c5">C</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c2">H</font> <a href="glib_000.html#K22" title="GLIB_000:func.22">.edgesBetween</a> <font color="Maroon" title="c5">C</font>
 <b>by </b><i><a class="txt" href="lexbfs.html#E1:29"><i><font color="Green" title="E20">A1</font></i></a>, <a class="ref" href="glib_000.html#T93" title="GLIB_000:th.93">GLIB_000:93</a></i>;<br/><a NAME="E5:29_1_1"/><b>then </b>
<font color="Maroon" title="c9">H2</font> is   <a href="glib_000.html#NM5" title="GLIB_000:NM.5">inducedSubgraph</a> of <font color="Maroon" title="c1">G</font>,<font color="Maroon" title="c5">C</font>
 <b>by </b><i><a class="txt" href="lexbfs.html#E1:29"><i><font color="Green" title="E20">A1</font></i></a>, <a class="txt" href="lexbfs.html#E3:29_1_1"><i><font color="Green" title="E27">A8</font></i></a>, <a class="ref" href="glib_000.html#T98" title="GLIB_000:th.98">GLIB_000:98</a></i>;<br/><b>hence </b><a NAME="E6:29_1_1"/>
<font color="Maroon" title="c8">G2</font> <a href="glib_000.html#R5" title="GLIB_000:pred.5">==</a> <font color="Maroon" title="c9">H2</font>
 <b>by </b><i><a class="txt" href="lexbfs.html#E2:29_1_1"><i><font color="Green" title="E26">A7</font></i></a>, <a class="ref" href="glib_000.html#T96" title="GLIB_000:th.96">GLIB_000:96</a></i>;<br/></div><b>end;</b></div><div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="29_1_2"><b>suppose </b></a><a NAME="E1:29_1_2"/><i><font color="Green" title="E25">A9</font></i>: 
( <font color="Maroon" title="c3">A</font> is  not  non <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <span class="p1">(<span class="default"><a href="glib_000.html#K6" title="GLIB_000:func.6">the_Vertices_of</a> <font color="Maroon" title="c1">G</font></span>)</span> &amp; <font color="Maroon" title="c4">B</font> is  non <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <span class="p1">(<span class="default"><a href="glib_000.html#K6" title="GLIB_000:func.6">the_Vertices_of</a> <font color="Maroon" title="c1">G</font></span>)</span> )
 ;<br/><div class="add"><a NAME="E2:29_1_2"/><b>then </b><i><font color="Green" title="E26">A10</font></i>: 
<font color="Maroon" title="c6">G1</font> <a href="glib_000.html#R5" title="GLIB_000:pred.5">==</a> <font color="Maroon" title="c1">G</font>
 <b>by </b><i><a class="ref" href="glib_000.html#D39" title="GLIB_000:def.39">GLIB_000:def 39</a></i>;<br/><a NAME="E3:29_1_2"/><b>then </b>
<font color="Maroon" title="c1">G</font> <a href="glib_000.html#K22" title="GLIB_000:func.22">.edgesBetween</a> <font color="Maroon" title="c5">C</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c6">G1</font> <a href="glib_000.html#K22" title="GLIB_000:func.22">.edgesBetween</a> <font color="Maroon" title="c5">C</font>
 <b>by </b><i><a class="ref" href="glib_000.html#T93" title="GLIB_000:th.93">GLIB_000:93</a></i>;<br/><a NAME="E4:29_1_2"/><b>then </b><i><font color="Green" title="E27">A11</font></i>: 
<font color="Maroon" title="c8">G2</font> is   <a href="glib_000.html#NM5" title="GLIB_000:NM.5">inducedSubgraph</a> of <font color="Maroon" title="c1">G</font>,<font color="Maroon" title="c5">C</font>
 <b>by </b><i><a class="txt" href="lexbfs.html#E2:29_1_2"><i><font color="Green" title="E26">A10</font></i></a>, <a class="ref" href="glib_000.html#T98" title="GLIB_000:th.98">GLIB_000:98</a></i>;<br/><a NAME="E5:29_1_2"/><i><font color="Green" title="E28">A12</font></i>: 
<font color="Maroon" title="c9">H2</font> is   <a href="glib_000.html#NM5" title="GLIB_000:NM.5">inducedSubgraph</a> of <font color="Maroon" title="c2">H</font>,<font color="Maroon" title="c5">C</font>
 <b>by </b><i><a class="txt" href="lexbfs.html#E3:29"><i><font color="Green" title="E22">A3</font></i></a>, <a class="txt" href="lexbfs.html#E4:29"><i><font color="Green" title="E23">A4</font></i></a>, <a class="txt" href="lexbfs.html#E5:29"><i><font color="Green" title="E24">A5</font></i></a>, <a class="txt" href="lexbfs.html#E1:29_1_2"><i><font color="Green" title="E25">A9</font></i></a>, <a class="ref" href="chord.html#T29" title="CHORD:th.29">CHORD:29</a></i>;<br/><a NAME="E6:29_1_2"/>
<font color="Maroon" title="c1">G</font> <a href="glib_000.html#K22" title="GLIB_000:func.22">.edgesBetween</a> <font color="Maroon" title="c5">C</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c2">H</font> <a href="glib_000.html#K22" title="GLIB_000:func.22">.edgesBetween</a> <font color="Maroon" title="c5">C</font>
 <b>by </b><i><a class="txt" href="lexbfs.html#E1:29"><i><font color="Green" title="E20">A1</font></i></a>, <a class="ref" href="glib_000.html#T93" title="GLIB_000:th.93">GLIB_000:93</a></i>;<br/><a NAME="E7:29_1_2"/><b>then </b>
<font color="Maroon" title="c9">H2</font> is   <a href="glib_000.html#NM5" title="GLIB_000:NM.5">inducedSubgraph</a> of <font color="Maroon" title="c1">G</font>,<font color="Maroon" title="c5">C</font>
 <b>by </b><i><a class="txt" href="lexbfs.html#E1:29"><i><font color="Green" title="E20">A1</font></i></a>, <a class="txt" href="lexbfs.html#E5:29_1_2"><i><font color="Green" title="E28">A12</font></i></a>, <a class="ref" href="glib_000.html#T98" title="GLIB_000:th.98">GLIB_000:98</a></i>;<br/><b>hence </b><a NAME="E8:29_1_2"/>
<font color="Maroon" title="c8">G2</font> <a href="glib_000.html#R5" title="GLIB_000:pred.5">==</a> <font color="Maroon" title="c9">H2</font>
 <b>by </b><i><a class="txt" href="lexbfs.html#E4:29_1_2"><i><font color="Green" title="E27">A11</font></i></a>, <a class="ref" href="glib_000.html#T96" title="GLIB_000:th.96">GLIB_000:96</a></i>;<br/></div><b>end;</b></div><div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="29_1_3"><b>suppose </b></a><a NAME="E1:29_1_3"/><i><font color="Green" title="E25">A13</font></i>: 
( <font color="Maroon" title="c3">A</font> is  non <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <span class="p1">(<span class="default"><a href="glib_000.html#K6" title="GLIB_000:func.6">the_Vertices_of</a> <font color="Maroon" title="c1">G</font></span>)</span> &amp; <font color="Maroon" title="c4">B</font> is  not  non <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <span class="p1">(<span class="default"><a href="glib_000.html#K6" title="GLIB_000:func.6">the_Vertices_of</a> <font color="Maroon" title="c1">G</font></span>)</span> )
 ;<br/><div class="add"><a NAME="E2:29_1_3"/><b>then </b>
<font color="Maroon" title="c7">H1</font> <a href="glib_000.html#R5" title="GLIB_000:pred.5">==</a> <font color="Maroon" title="c2">H</font>
 <b>by </b><i><a class="txt" href="lexbfs.html#E4:29"><i><font color="Green" title="E23">A4</font></i></a>, <a class="ref" href="glib_000.html#D39" title="GLIB_000:def.39">GLIB_000:def 39</a></i>;<br/><a NAME="E3:29_1_3"/><b>then </b><i><font color="Green" title="E26">A14</font></i>: 
<font color="Maroon" title="c7">H1</font> <a href="glib_000.html#R5" title="GLIB_000:pred.5">==</a> <font color="Maroon" title="c1">G</font>
 <b>by </b><i><a class="txt" href="lexbfs.html#E1:29"><i><font color="Green" title="E20">A1</font></i></a>, <a class="ref" href="glib_000.html#T88" title="GLIB_000:th.88">GLIB_000:88</a></i>;<br/><a NAME="E4:29_1_3"/><b>then </b>
<font color="Maroon" title="c1">G</font> <a href="glib_000.html#K22" title="GLIB_000:func.22">.edgesBetween</a> <font color="Maroon" title="c5">C</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c7">H1</font> <a href="glib_000.html#K22" title="GLIB_000:func.22">.edgesBetween</a> <font color="Maroon" title="c5">C</font>
 <b>by </b><i><a class="ref" href="glib_000.html#T93" title="GLIB_000:th.93">GLIB_000:93</a></i>;<br/><a NAME="E5:29_1_3"/><b>then </b><i><font color="Green" title="E27">A15</font></i>: 
<font color="Maroon" title="c9">H2</font> is   <a href="glib_000.html#NM5" title="GLIB_000:NM.5">inducedSubgraph</a> of <font color="Maroon" title="c1">G</font>,<font color="Maroon" title="c5">C</font>
 <b>by </b><i><a class="txt" href="lexbfs.html#E3:29_1_3"><i><font color="Green" title="E26">A14</font></i></a>, <a class="ref" href="glib_000.html#T98" title="GLIB_000:th.98">GLIB_000:98</a></i>;<br/><a NAME="E6:29_1_3"/>
<font color="Maroon" title="c8">G2</font> is   <a href="glib_000.html#NM5" title="GLIB_000:NM.5">inducedSubgraph</a> of <font color="Maroon" title="c1">G</font>,<font color="Maroon" title="c5">C</font>
 <b>by </b><i><a class="txt" href="lexbfs.html#E2:29"><i><font color="Green" title="E21">A2</font></i></a>, <a class="txt" href="lexbfs.html#E3:29"><i><font color="Green" title="E22">A3</font></i></a>, <a class="txt" href="lexbfs.html#E1:29_1_3"><i><font color="Green" title="E25">A13</font></i></a>, <a class="ref" href="chord.html#T29" title="CHORD:th.29">CHORD:29</a></i>;<br/><b>hence </b><a NAME="E7:29_1_3"/>
<font color="Maroon" title="c8">G2</font> <a href="glib_000.html#R5" title="GLIB_000:pred.5">==</a> <font color="Maroon" title="c9">H2</font>
 <b>by </b><i><a class="txt" href="lexbfs.html#E5:29_1_3"><i><font color="Green" title="E27">A15</font></i></a>, <a class="ref" href="glib_000.html#T96" title="GLIB_000:th.96">GLIB_000:96</a></i>;<br/></div><b>end;</b></div><div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="29_1_4"><b>suppose </b></a><a NAME="E1:29_1_4"/>
( <font color="Maroon" title="c3">A</font> is  not  non <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <span class="p1">(<span class="default"><a href="glib_000.html#K6" title="GLIB_000:func.6">the_Vertices_of</a> <font color="Maroon" title="c1">G</font></span>)</span> &amp; <font color="Maroon" title="c4">B</font> is  not  non <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <span class="p1">(<span class="default"><a href="glib_000.html#K6" title="GLIB_000:func.6">the_Vertices_of</a> <font color="Maroon" title="c1">G</font></span>)</span> )
 ;<br/><div class="add"><a NAME="E2:29_1_4"/><b>then </b><i><font color="Green" title="E25">A16</font></i>: 
( <font color="Maroon" title="c6">G1</font> <a href="glib_000.html#R5" title="GLIB_000:pred.5">==</a> <font color="Maroon" title="c1">G</font> &amp; <font color="Maroon" title="c7">H1</font> <a href="glib_000.html#R5" title="GLIB_000:pred.5">==</a> <font color="Maroon" title="c2">H</font> )
 <b>by </b><i><a class="txt" href="lexbfs.html#E4:29"><i><font color="Green" title="E23">A4</font></i></a>, <a class="ref" href="glib_000.html#D39" title="GLIB_000:def.39">GLIB_000:def 39</a></i>;<br/><a NAME="E3:29_1_4"/><b>then </b>
<font color="Maroon" title="c7">H1</font> <a href="glib_000.html#R5" title="GLIB_000:pred.5">==</a> <font color="Maroon" title="c1">G</font>
 <b>by </b><i><a class="txt" href="lexbfs.html#E1:29"><i><font color="Green" title="E20">A1</font></i></a>, <a class="ref" href="glib_000.html#T88" title="GLIB_000:th.88">GLIB_000:88</a></i>;<br/><a NAME="E4:29_1_4"/><b>then </b><i><font color="Green" title="E26">A17</font></i>: 
<font color="Maroon" title="c7">H1</font> <a href="glib_000.html#R5" title="GLIB_000:pred.5">==</a> <font color="Maroon" title="c6">G1</font>
 <b>by </b><i><a class="txt" href="lexbfs.html#E2:29_1_4"><i><font color="Green" title="E25">A16</font></i></a>, <a class="ref" href="glib_000.html#T88" title="GLIB_000:th.88">GLIB_000:88</a></i>;<br/><a NAME="E5:29_1_4"/><b>then </b>
<font color="Maroon" title="c6">G1</font> <a href="glib_000.html#K22" title="GLIB_000:func.22">.edgesBetween</a> <font color="Maroon" title="c5">C</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c7">H1</font> <a href="glib_000.html#K22" title="GLIB_000:func.22">.edgesBetween</a> <font color="Maroon" title="c5">C</font>
 <b>by </b><i><a class="ref" href="glib_000.html#T93" title="GLIB_000:th.93">GLIB_000:93</a></i>;<br/><a NAME="E6:29_1_4"/><b>then </b>
<font color="Maroon" title="c9">H2</font> is   <a href="glib_000.html#NM5" title="GLIB_000:NM.5">inducedSubgraph</a> of <font color="Maroon" title="c6">G1</font>,<font color="Maroon" title="c5">C</font>
 <b>by </b><i><a class="txt" href="lexbfs.html#E4:29_1_4"><i><font color="Green" title="E26">A17</font></i></a>, <a class="ref" href="glib_000.html#T98" title="GLIB_000:th.98">GLIB_000:98</a></i>;<br/><b>hence </b><a NAME="E7:29_1_4"/>
<font color="Maroon" title="c8">G2</font> <a href="glib_000.html#R5" title="GLIB_000:pred.5">==</a> <font color="Maroon" title="c9">H2</font>
 <b>by </b><i><a class="ref" href="glib_000.html#T96" title="GLIB_000:th.96">GLIB_000:96</a></i>;<br/></div><b>end;</b></div></div><b>end;</b></div>

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