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

<b>let </b><font color="Maroon">L</font> be  <a href="yellow_0.html#V1">lower-bounded</a> <a href="waybel_8.html#V2" target="_self">algebraic</a> <a href="waybel_0.html#NM8">LATTICE</a>;<br/><b>let </b><font color="Maroon">c</font> be  <a href="waybel_1.html#V7">closure</a> <a href="struct_0.html#NM6">Function</a> of <font color="Maroon">L</font>,<font color="Maroon">L</font>;<br/>



<b>assume </b><a NAME="E1:48"/><i><font color="Green">E31</font></i>: 
<font color="Maroon">c</font> is <a href="waybel_0.html#V22">directed-sups-preserving</a>
 ;<br/>

<a NAME="E2:48"/><b>then </b><i><font color="Green">E33</font></i>: 
<font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p1">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p2">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span> <a href="tarski.html#R1">c=</a>  <a href="pre_topc.html#K2">[#]</a> <span class="p1">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <span class="p2">(<span class="default"><a href="yellow_2.html#K1">Image</a> <font color="Maroon">c</font></span>)</span></span>)</span>
 
<b>by </b><i/>;<br/>
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="48_1"><b>now </b></a><div class="add"><b>let </b><font color="Maroon">a'</font> be    <a href="hidden.html#M1">set</a> ;<br/><a NAME="E1:48_1"/>
<font color="Maroon">c</font> is <a href="quantal1.html#V11">idempotent</a>
 <b>by </b><i><a class="ref" href="waybel_1.html#D13">WAYBEL_1:def 13</a></i>;<br/><b>then reconsider </b><font color="Maroon">Imc</font> =  <a href="yellow_2.html#K1">Image</a> <font color="Maroon">c</font> as  <a href="lattice3.html#V3">complete</a> <a href="waybel_0.html#NM8">LATTICE</a> <b>by </b><i>, <a class="ref" href="yellow_2.html#T37">YELLOW_2:37</a></i>;<br/><b>assume </b><a NAME="E3:48_1"/><i><font color="Green">E36</font></i>: 
<font color="Maroon">a'</font> <a href="hidden.html#R2">in</a>  <a href="pre_topc.html#K2">[#]</a> <span class="p1">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <span class="p2">(<span class="default"><a href="yellow_2.html#K1">Image</a> <font color="Maroon">c</font></span>)</span></span>)</span>
 ;<br/><a NAME="E4:48_1"/><b>then </b><i><font color="Green">E37</font></i>: 
<font color="Maroon">a'</font> <a href="hidden.html#R2">in</a> the <a href="struct_0.html#U1">carrier</a> of <span class="p1">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <span class="p2">(<span class="default"><a href="yellow_2.html#K1">Image</a> <font color="Maroon">c</font></span>)</span></span>)</span>
 ;<br/><a NAME="E5:48_1"/><i><font color="Green">E38</font></i>: 
the <a href="struct_0.html#U1">carrier</a> of <span class="p1">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">Imc</font></span>)</span> <a href="tarski.html#R1">c=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">Imc</font>
 <b>by </b><i><a class="ref" href="yellow_0.html#D13">YELLOW_0:def 13</a></i>;<br/><a NAME="E6:48_1"/><b>then </b><i><font color="Green">E39</font></i>: 
<font color="Maroon">a'</font> <a href="hidden.html#R2">in</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">Imc</font>
 <b>by </b><i/>;<br/><b>reconsider </b><font color="Maroon">a</font> = <font color="Maroon">a'</font> as   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">Imc</font> <b>by </b><i>, <a class="ref" href="waybel_8.html#D1" target="_self">Def1</a></i>;<br/><a NAME="E8:48_1"/><i><font color="Green">E41</font></i>: 
<font color="Maroon">a</font> <a href="hidden.html#R2">in</a>  <a href="relset_1.html#K5">rng</a> <font color="Maroon">c</font>
 <b>by </b><i>, <a class="ref" href="yellow_0.html#D15">YELLOW_0:def 15</a></i>;<br/><a NAME="E9:48_1"/>
<font color="Maroon">c</font> is <a href="quantal1.html#V11">idempotent</a>
 <b>by </b><i><a class="ref" href="waybel_1.html#D13">WAYBEL_1:def 13</a></i>;<br/><a NAME="E10:48_1"/><b>then </b>
 <a href="relset_1.html#K5">rng</a> <font color="Maroon">c</font> <a href="hidden.html#R1">=</a> <span class="p1">{<span class="default"> <font color="Olive">x</font> where <font color="Olive">x</font> is   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">L</font> : <font color="Olive">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <font color="Olive">x</font> </span>}</span> 
 <b>by </b><i><a class="ref" href="yellow_2.html#T21">YELLOW_2:21</a></i>;<br/><b>then consider </b><font color="Maroon">a1</font> being   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">L</font><b> such that </b><br/><a NAME="E12:48_1"/><i><font color="Green">E42</font></i>: 
( <font color="Maroon">a</font> <a href="hidden.html#R1">=</a> <font color="Maroon">a1</font> &amp; <font color="Maroon">a1</font> <a href="hidden.html#R1">=</a> <font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <font color="Maroon">a1</font> )
 <b>by </b><i/>;<br/><a NAME="E13:48_1"/>
<font color="Maroon">a</font> is <a href="waybel_3.html#V1">compact</a>
 <b>by </b><i>, </i>;<br/><a NAME="E14:48_1"/><b>then </b><i><font color="Green">E59</font></i>: 
<font color="Maroon">a</font> <a href="waybel_3.html#NR2" target="_self">&lt;&lt;</a> <font color="Maroon">a</font>
 <b>by </b><i><a class="ref" href="waybel_3.html#D2">WAYBEL_3:def 2</a></i>;<br/><a NAME="E15:48_1"/><i><font color="Green">E60</font></i>: 
<font color="Maroon">c</font> is <a href="orders_3.html#V5">monotone</a>
 <b>by </b><i>, <a class="ref" href="yellow_2.html#T18">YELLOW_2:18</a></i>;<br/><a NAME="E16:48_1"/><i><font color="Green">E61</font></i>: 
<font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p1">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p2">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span> <a href="tarski.html#R1">c=</a>  <a href="relset_1.html#K5">rng</a> <font color="Maroon">c</font>
 <b>by </b><i><a class="ref" href="relat_1.html#T144">RELAT_1:144</a></i>;<br/><a NAME="E17:48_1"/><i><font color="Green">E64</font></i>: 
<span class="p1">(<span class="default"><a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a</font></span>)</span> <a href="subset_1.html#K9">/\</a> <span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p2">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p3">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span></span>)</span> is  non <a href="xboole_0.html#V1">empty</a> <a href="waybel_0.html#V1">directed</a> <a href="struct_0.html#NM2">Subset</a> of <font color="Maroon">Imc</font>
 <div><a class="txt" onclick="hs2(this)" href="javascript:()" title="48_1_1"><b>proof </b></a><div class="add">

<a NAME="E1:48_1_1"/>
<span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p2">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p3">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span></span>)</span> <a href="subset_1.html#K9">/\</a> <span class="p1">(<span class="default"><a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a</font></span>)</span> is   <a href="struct_0.html#NM2">Subset</a> of <font color="Maroon">Imc</font>
 
;<br/>
<b>then reconsider </b><font color="Maroon">D</font> = <span class="p1">(<span class="default"><a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a</font></span>)</span> <a href="subset_1.html#K9">/\</a> <span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p2">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p3">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span></span>)</span> as   <a href="struct_0.html#NM2">Subset</a> of <font color="Maroon">Imc</font> ;<br/>
<a NAME="E3:48_1_1"/><i><font color="Green">E65</font></i>: 
 <a href="relset_1.html#K4">dom</a> <font color="Maroon">c</font> <a href="hidden.html#R1">=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">L</font>
 
<b>by </b><i><a class="ref" href="funct_2.html#D1">FUNCT_2:def 1</a></i>;<br/>
<a NAME="E4:48_1_1"/>
 <a href="yellow_0.html#K3">Bottom</a> <font color="Maroon">L</font> is <a href="waybel_3.html#V1">compact</a>
 
<b>by </b><i><a class="ref" href="waybel_3.html#T15">WAYBEL_3:15</a></i>;<br/>
<a NAME="E5:48_1_1"/><b>then </b>
 <a href="yellow_0.html#K3">Bottom</a> <font color="Maroon">L</font> <a href="hidden.html#R2">in</a> the <a href="struct_0.html#U1">carrier</a> of <span class="p1">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span>
 
<b>by </b><i/>;<br/>
<a NAME="E6:48_1_1"/><b>then </b>
 <a href="yellow_0.html#K3">Bottom</a> <font color="Maroon">L</font> <a href="hidden.html#R2">in</a>  <a href="pre_topc.html#K2">[#]</a> <span class="p1">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span>
 
<b>by </b><i><a class="ref" href="pre_topc.html#T12">PRE_TOPC:12</a></i>;<br/>
<a NAME="E7:48_1_1"/><b>then </b><i><font color="Green">E66</font></i>: 
<font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <span class="p1">(<span class="default"><a href="yellow_0.html#K3">Bottom</a> <font color="Maroon">L</font></span>)</span> <a href="hidden.html#R2">in</a> <font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p1">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p2">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span>
 
<b>by </b><i>, <a class="ref" href="funct_1.html#D12">FUNCT_1:def 12</a></i>;<br/>
<a NAME="E8:48_1_1"/><i><font color="Green">E67</font></i>: 
 <a href="yellow_0.html#K3">Bottom</a> <font color="Maroon">Imc</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">a</font>
 
<b>by </b><i><a class="ref" href="yellow_0.html#T44">YELLOW_0:44</a></i>;<br/>
<a NAME="E9:48_1_1"/><i><font color="Green">E68</font></i>: 
 <a href="yellow_0.html#R1">ex_sup_of</a>  <a href="xboole_0.html#K1">{}</a> ,<font color="Maroon">L</font>
 
<b>by </b><i><a class="ref" href="yellow_0.html#T42">YELLOW_0:42</a></i>;<br/>
<a NAME="E10:48_1_1"/><i><font color="Green">E69</font></i>: 
 <a href="xboole_0.html#K1">{}</a>  <a href="tarski.html#R1">c=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">L</font>
 
<b>by </b><i><a class="ref" href="xboole_1.html#T2">XBOOLE_1:2</a></i>;<br/>
<a NAME="E11:48_1_1"/><i><font color="Green">E72</font></i>: 
 <a href="xboole_0.html#K1">{}</a>  <a href="tarski.html#R1">c=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">Imc</font>
 
<b>by </b><i><a class="ref" href="xboole_1.html#T2">XBOOLE_1:2</a></i>;<br/>
<font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <span class="p1">(<span class="default"><a href="yellow_0.html#K3">Bottom</a> <font color="Maroon">L</font></span>)</span> = 
<font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <span class="p1">(<span class="default"><a href="yellow_0.html#K1">"\/"</a> <a href="xboole_0.html#K1">{}</a> ,<font color="Maroon">L</font></span>)</span>
<b>by </b><i><a class="ref" href="yellow_0.html#D11">YELLOW_0:def 11</a></i>
<br/>.= 
 <a href="yellow_0.html#K1">"\/"</a> <a href="xboole_0.html#K1">{}</a> ,<font color="Maroon">Imc</font>
<b>by </b><i><a class="txt" href="waybel_8.html#E4:48_1"><i><font color="Green">E37</font></i></a>, <a class="txt" href="waybel_8.html#E5:48_1"><i><font color="Green">E38</font></i></a>, <a class="txt" href="waybel_8.html#E6:48_1"><i><font color="Green">E39</font></i></a>, <a class="ref" href="waybel_1.html#T58">WAYBEL_1:58</a></i>
<br/>.= 
 <a href="yellow_0.html#K3">Bottom</a> <font color="Maroon">Imc</font>
<b>by </b><i><a class="ref" href="yellow_0.html#D11">YELLOW_0:def 11</a></i>
;<br/>
<a NAME="E13:48_1_1"/><b>then </b><i><font color="Green">E74</font></i>: 
<font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <span class="p1">(<span class="default"><a href="yellow_0.html#K3">Bottom</a> <font color="Maroon">L</font></span>)</span> <a href="hidden.html#R2">in</a>  <a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a</font>
 
<b>by </b><i><a class="txt" href="waybel_8.html#E3:48_1"><i><font color="Green">E36</font></i></a>, <a class="ref" href="waybel_0.html#T17">WAYBEL_0:17</a></i>;<br/>
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="48_1_1_2"><b>now </b></a><div class="add"><b>let </b><font color="Maroon">x</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">Imc</font>, <font color="Maroon">y</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">Imc</font>;<br/><b>assume </b><a NAME="E1:48_1_1_2"/>
( <font color="Maroon">x</font> <a href="hidden.html#R2">in</a> <font color="Maroon">D</font> &amp; <font color="Maroon">y</font> <a href="hidden.html#R2">in</a> <font color="Maroon">D</font> )
 ;<br/><a NAME="E2:48_1_1_2"/><b>then </b><i><font color="Green">E75</font></i>: 
( <font color="Maroon">x</font> <a href="hidden.html#R2">in</a>  <a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a</font> &amp; <font color="Maroon">x</font> <a href="hidden.html#R2">in</a> <font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p1">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p2">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span> &amp; <font color="Maroon">y</font> <a href="hidden.html#R2">in</a>  <a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a</font> &amp; <font color="Maroon">y</font> <a href="hidden.html#R2">in</a> <font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p1">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p2">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span> )
 <b>by </b><i><a class="ref" href="xboole_0.html#D3">XBOOLE_0:def 3</a></i>;<br/><b>then consider </b><font color="Maroon">d</font> being    <a href="hidden.html#M1">set</a> <b> such that </b><br/><a NAME="E4:48_1_1_2"/><i><font color="Green">E76</font></i>: 
<font color="Maroon">d</font> <a href="hidden.html#R2">in</a>  <a href="relset_1.html#K4">dom</a> <font color="Maroon">c</font>
 <b>and </b><br/><a NAME="E5:48_1_1_2"/><i><font color="Green">E77</font></i>: 
<font color="Maroon">d</font> <a href="hidden.html#R2">in</a>  <a href="pre_topc.html#K2">[#]</a> <span class="p1">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span>
 <b>and </b><br/><a NAME="E6:48_1_1_2"/><i><font color="Green">E78</font></i>: 
<font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">c</font> <a href="funct_1.html#K1">.</a> <font color="Maroon">d</font>
 <b>by </b><i><a class="ref" href="funct_1.html#D12">FUNCT_1:def 12</a></i>;<br/><b>reconsider </b><font color="Maroon">d</font> = <font color="Maroon">d</font> as   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">L</font> <b>by </b><i><a class="txt" href="waybel_8.html#E12:48_1"><i><font color="Green">E42</font></i></a></i>;<br/><b>consider </b><font color="Maroon">e</font> being    <a href="hidden.html#M1">set</a> <b> such that </b><br/><a NAME="E9:48_1_1_2"/><i><font color="Green">E79</font></i>: 
<font color="Maroon">e</font> <a href="hidden.html#R2">in</a>  <a href="relset_1.html#K4">dom</a> <font color="Maroon">c</font>
 <b>and </b><br/><a NAME="E10:48_1_1_2"/><i><font color="Green">E80</font></i>: 
<font color="Maroon">e</font> <a href="hidden.html#R2">in</a>  <a href="pre_topc.html#K2">[#]</a> <span class="p1">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span>
 <b>and </b><br/><a NAME="E11:48_1_1_2"/><i><font color="Green">E81</font></i>: 
<font color="Maroon">y</font> <a href="hidden.html#R1">=</a> <font color="Maroon">c</font> <a href="funct_1.html#K1">.</a> <font color="Maroon">e</font>
 <b>by </b><i><a class="txt" href="waybel_8.html#E8:48_1"><i><font color="Green">E41</font></i></a>, <a class="ref" href="funct_1.html#D12">FUNCT_1:def 12</a></i>;<br/><b>reconsider </b><font color="Maroon">e</font> = <font color="Maroon">e</font> as   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">L</font> <b>by </b><i/>;<br/><a NAME="E13:48_1_1_2"/>
<font color="Maroon">d</font> <a href="lattice3.html#K13">"\/"</a> <font color="Maroon">e</font> <a href="hidden.html#R2">in</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">L</font>
 ;<br/><a NAME="E14:48_1_1_2"/><b>then </b>
<font color="Maroon">d</font> <a href="lattice3.html#K13">"\/"</a> <font color="Maroon">e</font> <a href="hidden.html#R2">in</a>  <a href="relset_1.html#K4">dom</a> <font color="Maroon">c</font>
 <b>by </b><i><a class="ref" href="funct_2.html#D1">FUNCT_2:def 1</a></i>;<br/><a NAME="E15:48_1_1_2"/><b>then </b>
<font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <span class="p1">(<span class="default"><font color="Maroon">d</font> <a href="lattice3.html#K13">"\/"</a> <font color="Maroon">e</font></span>)</span> <a href="hidden.html#R2">in</a>  <a href="relset_1.html#K5">rng</a> <font color="Maroon">c</font>
 <b>by </b><i><a class="ref" href="funct_1.html#D5">FUNCT_1:def 5</a></i>;<br/><b>then reconsider </b><font color="Maroon">z</font> = <font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <span class="p1">(<span class="default"><font color="Maroon">d</font> <a href="lattice3.html#K13">"\/"</a> <font color="Maroon">e</font></span>)</span> as   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">Imc</font> <b>by </b><i><a class="ref" href="yellow_0.html#D15">YELLOW_0:def 15</a></i>;<br/><b>take </b><font color="Maroon">z</font> = <font color="Maroon">z</font>;<br/><a NAME="E17:48_1_1_2"/>
 <a href="grcat_1.html#K7">id</a> <font color="Maroon">L</font> <a href="yellow_2.html#R1">&lt;=</a> <font color="Maroon">c</font>
 <b>by </b><i><a class="ref" href="waybel_1.html#D14">WAYBEL_1:def 14</a></i>;<br/><a NAME="E18:48_1_1_2"/><b>then </b>
( <span class="p1">(<span class="default"><a href="grcat_1.html#K7">id</a> <font color="Maroon">L</font></span>)</span> <a href="funct_2.html#K3">.</a> <font color="Maroon">d</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <font color="Maroon">d</font> &amp; <span class="p1">(<span class="default"><a href="grcat_1.html#K7">id</a> <font color="Maroon">L</font></span>)</span> <a href="funct_2.html#K3">.</a> <font color="Maroon">e</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <font color="Maroon">e</font> )
 <b>by </b><i><a class="ref" href="yellow_2.html#T10">YELLOW_2:10</a></i>;<br/><a NAME="E19:48_1_1_2"/><b>then </b>
( <font color="Maroon">d</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <font color="Maroon">d</font> &amp; <font color="Maroon">e</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <font color="Maroon">e</font> )
 <b>by </b><i><a class="ref" href="tmap_1.html#T91">TMAP_1:91</a></i>;<br/><a NAME="E20:48_1_1_2"/><b>then </b><i><font color="Green">E122</font></i>: 
<font color="Maroon">d</font> <a href="lattice3.html#K13">"\/"</a> <font color="Maroon">e</font> <a href="orders_2.html#R3">&lt;=</a> <span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <font color="Maroon">d</font></span>)</span> <a href="lattice3.html#K13">"\/"</a> <span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <font color="Maroon">e</font></span>)</span>
 <b>by </b><i><a class="ref" href="yellow_3.html#T3">YELLOW_3:3</a></i>;<br/><a NAME="E21:48_1_1_2"/>
( <font color="Maroon">x</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">a</font> &amp; <font color="Maroon">y</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">a</font> )
 <b>by </b><i><a class="txt" href="waybel_8.html#E8:48_1"><i><font color="Green">E41</font></i></a>, <a class="ref" href="waybel_0.html#T17">WAYBEL_0:17</a></i>;<br/><a NAME="E22:48_1_1_2"/><b>then </b>
( <font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <font color="Maroon">d</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">a1</font> &amp; <font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <font color="Maroon">e</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">a1</font> )
 <b>by </b><i>, , , <a class="ref" href="yellow_0.html#T60">YELLOW_0:60</a></i>;<br/><a NAME="E23:48_1_1_2"/><b>then </b>
<span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <font color="Maroon">d</font></span>)</span> <a href="lattice3.html#K13">"\/"</a> <span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <font color="Maroon">e</font></span>)</span> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">a1</font>
 <b>by </b><i><a class="ref" href="yellow_0.html#T22">YELLOW_0:22</a></i>;<br/><a NAME="E24:48_1_1_2"/><b>then </b>
<font color="Maroon">d</font> <a href="lattice3.html#K13">"\/"</a> <font color="Maroon">e</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">a1</font>
 <b>by </b><i>, <a class="ref" href="orders_2.html#T26">ORDERS_2:26</a></i>;<br/><a NAME="E25:48_1_1_2"/><b>then </b>
<font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <span class="p1">(<span class="default"><font color="Maroon">d</font> <a href="lattice3.html#K13">"\/"</a> <font color="Maroon">e</font></span>)</span> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">a1</font>
 <b>by </b><i>, <a class="txt" href="waybel_8.html#E1:48"><i><font color="Green">E31</font></i></a>, <a class="ref" href="waybel_1.html#D2">WAYBEL_1:def 2</a></i>;<br/><a NAME="E26:48_1_1_2"/><b>then </b>
<font color="Maroon">z</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">a</font>
 <b>by </b><i>, <a class="ref" href="yellow_0.html#T61">YELLOW_0:61</a></i>;<br/><a NAME="E27:48_1_1_2"/><b>then </b><i><font color="Green">E123</font></i>: 
<font color="Maroon">z</font> <a href="hidden.html#R2">in</a>  <a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a</font>
 <b>by </b><i><a class="ref" href="waybel_0.html#T17">WAYBEL_0:17</a></i>;<br/><a NAME="E28:48_1_1_2"/>
<font color="Maroon">d</font> <a href="lattice3.html#K13">"\/"</a> <font color="Maroon">e</font> <a href="hidden.html#R2">in</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">L</font>
 ;<br/><a NAME="E29:48_1_1_2"/><b>then </b><i><font color="Green">E124</font></i>: 
<font color="Maroon">d</font> <a href="lattice3.html#K13">"\/"</a> <font color="Maroon">e</font> <a href="hidden.html#R2">in</a>  <a href="relset_1.html#K4">dom</a> <font color="Maroon">c</font>
 <b>by </b><i><a class="ref" href="funct_2.html#D1">FUNCT_2:def 1</a></i>;<br/><a NAME="E30:48_1_1_2"/><i><font color="Green">E125</font></i>: 
( <font color="Maroon">d</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">d</font> <a href="lattice3.html#K13">"\/"</a> <font color="Maroon">e</font> &amp; <font color="Maroon">e</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">d</font> <a href="lattice3.html#K13">"\/"</a> <font color="Maroon">e</font> )
 <b>by </b><i><a class="ref" href="yellow_0.html#T22">YELLOW_0:22</a></i>;<br/><a NAME="E31:48_1_1_2"/>
( <font color="Maroon">d</font> is <a href="waybel_3.html#V1">compact</a> &amp; <font color="Maroon">e</font> is <a href="waybel_3.html#V1">compact</a> )
 <b>by </b><i>, , </i>;<br/><a NAME="E32:48_1_1_2"/><b>then </b>
( <font color="Maroon">d</font> <a href="waybel_3.html#NR2" target="_self">&lt;&lt;</a> <font color="Maroon">d</font> &amp; <font color="Maroon">e</font> <a href="waybel_3.html#NR2" target="_self">&lt;&lt;</a> <font color="Maroon">e</font> )
 <b>by </b><i><a class="ref" href="waybel_3.html#D2">WAYBEL_3:def 2</a></i>;<br/><a NAME="E33:48_1_1_2"/><b>then </b>
( <font color="Maroon">d</font> <a href="waybel_3.html#NR2" target="_self">&lt;&lt;</a> <font color="Maroon">d</font> <a href="lattice3.html#K13">"\/"</a> <font color="Maroon">e</font> &amp; <font color="Maroon">e</font> <a href="waybel_3.html#NR2" target="_self">&lt;&lt;</a> <font color="Maroon">d</font> <a href="lattice3.html#K13">"\/"</a> <font color="Maroon">e</font> )
 <b>by </b><i>, <a class="ref" href="waybel_3.html#T2">WAYBEL_3:2</a></i>;<br/><a NAME="E34:48_1_1_2"/><b>then </b>
<font color="Maroon">d</font> <a href="lattice3.html#K13">"\/"</a> <font color="Maroon">e</font> <a href="waybel_3.html#NR2" target="_self">&lt;&lt;</a> <font color="Maroon">d</font> <a href="lattice3.html#K13">"\/"</a> <font color="Maroon">e</font>
 <b>by </b><i><a class="ref" href="waybel_3.html#T3">WAYBEL_3:3</a></i>;<br/><a NAME="E35:48_1_1_2"/><b>then </b>
<font color="Maroon">d</font> <a href="lattice3.html#K13">"\/"</a> <font color="Maroon">e</font> is <a href="waybel_3.html#V1">compact</a>
 <b>by </b><i><a class="ref" href="waybel_3.html#D2">WAYBEL_3:def 2</a></i>;<br/><a NAME="E36:48_1_1_2"/><b>then </b>
<font color="Maroon">d</font> <a href="lattice3.html#K13">"\/"</a> <font color="Maroon">e</font> <a href="hidden.html#R2">in</a> the <a href="struct_0.html#U1">carrier</a> of <span class="p1">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span>
 <b>by </b><i/>;<br/><a NAME="E37:48_1_1_2"/><b>then </b>
<font color="Maroon">d</font> <a href="lattice3.html#K13">"\/"</a> <font color="Maroon">e</font> <a href="hidden.html#R2">in</a>  <a href="pre_topc.html#K2">[#]</a> <span class="p1">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span>
 <b>by </b><i><a class="ref" href="pre_topc.html#T12">PRE_TOPC:12</a></i>;<br/><a NAME="E38:48_1_1_2"/><b>then </b>
<font color="Maroon">z</font> <a href="hidden.html#R2">in</a> <font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p1">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p2">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span>
 <b>by </b><i><a class="ref" href="waybel_8.html#T4" target="_self">Th4</a>, <a class="ref" href="funct_1.html#D12">FUNCT_1:def 12</a></i>;<br/><b>hence </b><a NAME="E39:48_1_1_2"/>
<font color="Maroon">z</font> <a href="hidden.html#R2">in</a> <font color="Maroon">D</font>
 <b>by </b><i>, <a class="ref" href="xboole_0.html#D3">XBOOLE_0:def 3</a></i>;<br/><a NAME="E40:48_1_1_2"/>
( <font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <font color="Maroon">d</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <span class="p1">(<span class="default"><font color="Maroon">d</font> <a href="lattice3.html#K13">"\/"</a> <font color="Maroon">e</font></span>)</span> &amp; <font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <font color="Maroon">e</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <span class="p1">(<span class="default"><font color="Maroon">d</font> <a href="lattice3.html#K13">"\/"</a> <font color="Maroon">e</font></span>)</span> )
 <b>by </b><i><a class="txt" href="waybel_8.html#E1:48"><i><font color="Green">E31</font></i></a>, , <a class="ref" href="waybel_1.html#D2">WAYBEL_1:def 2</a></i>;<br/><b>hence </b><a NAME="E41:48_1_1_2"/>
( <font color="Maroon">x</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">z</font> &amp; <font color="Maroon">y</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">z</font> )
 <b>by </b><i>, , <a class="ref" href="yellow_0.html#T61">YELLOW_0:61</a></i>;<br/></div><b>end;</b></div>
<b>hence </b><a NAME="E15:48_1_1"/>
<span class="p1">(<span class="default"><a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a</font></span>)</span> <a href="subset_1.html#K9">/\</a> <span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p2">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p3">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span></span>)</span> is  non <a href="xboole_0.html#V1">empty</a> <a href="waybel_0.html#V1">directed</a> <a href="struct_0.html#NM2">Subset</a> of <font color="Maroon">Imc</font>
 <b>by </b><i>, , <a class="ref" href="waybel_0.html#D1">WAYBEL_0:def 1</a>, <a class="ref" href="xboole_0.html#D3">XBOOLE_0:def 3</a></i>;<br/>


</div><b>end;</b></div><a NAME="E18:48_1"/><i><font color="Green">E126</font></i>: 
 <a href="waybel_8.html#K2" target="_self">compactbelow</a> <font color="Maroon">a1</font> is  non <a href="xboole_0.html#V1">empty</a> <a href="waybel_0.html#V1">directed</a> <a href="struct_0.html#NM2">Subset</a> of <font color="Maroon">L</font>
 <b>by </b><i/>;<br/><a NAME="E19:48_1"/><b>then </b><i><font color="Green">E127</font></i>: 
<font color="Maroon">c</font> <a href="waybel_0.html#R4">preserves_sup_of</a>  <a href="waybel_8.html#K2" target="_self">compactbelow</a> <font color="Maroon">a1</font>
 <b>by </b><i>, <a class="ref" href="waybel_0.html#D37">WAYBEL_0:def 37</a></i>;<br/><a NAME="E20:48_1"/><i><font color="Green">E128</font></i>: 
 <a href="yellow_0.html#R1">ex_sup_of</a>  <a href="waybel_8.html#K2" target="_self">compactbelow</a> <font color="Maroon">a1</font>,<font color="Maroon">L</font>
 <b>by </b><i>, <a class="ref" href="waybel_0.html#T75">WAYBEL_0:75</a></i>;<br/><a NAME="E21:48_1"/><b>then </b><i><font color="Green">E129</font></i>: 
 <a href="yellow_0.html#R1">ex_sup_of</a> <font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p1">(<span class="default"><a href="waybel_8.html#K2" target="_self">compactbelow</a> <font color="Maroon">a1</font></span>)</span>,<font color="Maroon">L</font>
 <b>by </b><i>, <a class="ref" href="waybel_0.html#D31">WAYBEL_0:def 31</a></i>;<br/><a NAME="E22:48_1"/>
<font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p1">(<span class="default"><a href="waybel_8.html#K2" target="_self">compactbelow</a> <font color="Maroon">a1</font></span>)</span> <a href="tarski.html#R1">c=</a>  <a href="relset_1.html#K5">rng</a> <font color="Maroon">c</font>
 <b>by </b><i><a class="ref" href="relat_1.html#T144">RELAT_1:144</a></i>;<br/><a NAME="E23:48_1"/><b>then </b><i><font color="Green">E130</font></i>: 
<font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p1">(<span class="default"><a href="waybel_8.html#K2" target="_self">compactbelow</a> <font color="Maroon">a1</font></span>)</span> <a href="tarski.html#R1">c=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">Imc</font>
 <b>by </b><i><a class="ref" href="yellow_0.html#D15">YELLOW_0:def 15</a></i>;<br/><a NAME="E24:48_1"/>
<font color="Maroon">a</font> <a href="hidden.html#R1">=</a>  <a href="yellow_0.html#NK3" target="_self">sup</a> <span class="p1">(<span class="default"><a href="waybel_8.html#K2" target="_self">compactbelow</a> <font color="Maroon">a1</font></span>)</span>
 <b>by </b><i>, </i>;<br/><a NAME="E25:48_1"/><b>then </b>
<font color="Maroon">a</font> <a href="hidden.html#R1">=</a>  <a href="yellow_0.html#NK3" target="_self">sup</a> <span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p2">(<span class="default"><a href="waybel_8.html#K2" target="_self">compactbelow</a> <font color="Maroon">a1</font></span>)</span></span>)</span>
 <b>by </b><i>, , <a class="txt" href="waybel_8.html#E3:48_1"><i><font color="Green">E36</font></i></a>, <a class="ref" href="waybel_0.html#D31">WAYBEL_0:def 31</a></i>;<br/><a NAME="E26:48_1"/><b>then </b><i><font color="Green">E131</font></i>: 
<font color="Maroon">a</font> <a href="hidden.html#R1">=</a>  <a href="yellow_0.html#K1">"\/"</a> <span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p2">(<span class="default"><a href="waybel_8.html#K2" target="_self">compactbelow</a> <font color="Maroon">a1</font></span>)</span></span>)</span>,<font color="Maroon">Imc</font>
 <b>by </b><i>, <a class="txt" href="waybel_8.html#E4:48_1"><i><font color="Green">E37</font></i></a>, <a class="txt" href="waybel_8.html#E5:48_1"><i><font color="Green">E38</font></i></a>, <a class="ref" href="waybel_1.html#T58">WAYBEL_1:58</a></i>;<br/><a NAME="E27:48_1"/><i><font color="Green">E132</font></i>: 
 <a href="yellow_0.html#R1">ex_sup_of</a> <font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p1">(<span class="default"><a href="waybel_8.html#K2" target="_self">compactbelow</a> <font color="Maroon">a1</font></span>)</span>,<font color="Maroon">Imc</font>
 <b>by </b><i><a class="ref" href="yellow_0.html#T17">YELLOW_0:17</a></i>;<br/><a NAME="E28:48_1"/><i><font color="Green">E133</font></i>: 
 <a href="yellow_0.html#R1">ex_sup_of</a> <span class="p1">(<span class="default"><a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a</font></span>)</span> <a href="subset_1.html#K9">/\</a> <span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p2">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p3">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span></span>)</span>,<font color="Maroon">Imc</font>
 <b>by </b><i><a class="ref" href="yellow_0.html#T17">YELLOW_0:17</a></i>;<br/><div><a class="txt" onclick="hs2(this)" href="javascript:()" title="48_1_2"><b>now </b></a><div class="add"><b>let </b><font color="Maroon">z</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>assume </b><a NAME="E1:48_1_2"/>
<font color="Maroon">z</font> <a href="hidden.html#R2">in</a> <font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p1">(<span class="default"><a href="waybel_8.html#K2" target="_self">compactbelow</a> <font color="Maroon">a1</font></span>)</span>
 ;<br/><b>then consider </b><font color="Maroon">v</font> being    <a href="hidden.html#M1">set</a> <b> such that </b><br/><a NAME="E3:48_1_2"/><i><font color="Green">E134</font></i>: 
<font color="Maroon">v</font> <a href="hidden.html#R2">in</a>  <a href="relset_1.html#K4">dom</a> <font color="Maroon">c</font>
 <b>and </b><br/><a NAME="E4:48_1_2"/><i><font color="Green">E135</font></i>: 
<font color="Maroon">v</font> <a href="hidden.html#R2">in</a>  <a href="waybel_8.html#K2" target="_self">compactbelow</a> <font color="Maroon">a1</font>
 <b>and </b><br/><a NAME="E5:48_1_2"/><i><font color="Green">E136</font></i>: 
<font color="Maroon">z</font> <a href="hidden.html#R1">=</a> <font color="Maroon">c</font> <a href="funct_1.html#K1">.</a> <font color="Maroon">v</font>
 <b>by </b><i><a class="ref" href="funct_1.html#D12">FUNCT_1:def 12</a></i>;<br/><a NAME="E6:48_1_2"/><i><font color="Green">E137</font></i>: 
<font color="Maroon">v</font> <a href="hidden.html#R2">in</a> <span class="p1">(<span class="default"><a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a1</font></span>)</span> <a href="subset_1.html#K8">/\</a> the <a href="struct_0.html#U1">carrier</a> of <span class="p1">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span>
 <b>by </b><i>, </i>;<br/><a NAME="E7:48_1_2"/><b>then </b>
<font color="Maroon">v</font> <a href="hidden.html#R2">in</a> the <a href="struct_0.html#U1">carrier</a> of <span class="p1">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span>
 <b>by </b><i><a class="ref" href="xboole_0.html#D3">XBOOLE_0:def 3</a></i>;<br/><a NAME="E8:48_1_2"/><b>then </b>
<font color="Maroon">v</font> <a href="hidden.html#R2">in</a>  <a href="pre_topc.html#K2">[#]</a> <span class="p1">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span>
 <b>by </b><i><a class="ref" href="pre_topc.html#T12">PRE_TOPC:12</a></i>;<br/><a NAME="E9:48_1_2"/><b>then </b><i><font color="Green">E138</font></i>: 
<font color="Maroon">z</font> <a href="hidden.html#R2">in</a> <font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p1">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p2">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span>
 <b>by </b><i><a class="txt" href="waybel_8.html#E12:48_1"><i><font color="Green">E42</font></i></a>, , <a class="ref" href="funct_1.html#D12">FUNCT_1:def 12</a></i>;<br/><a NAME="E10:48_1_2"/><i><font color="Green">E139</font></i>: 
<font color="Maroon">v</font> <a href="hidden.html#R2">in</a>  <a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a1</font>
 <b>by </b><i>, <a class="ref" href="xboole_0.html#D3">XBOOLE_0:def 3</a></i>;<br/><b>then reconsider </b><font color="Maroon">v'</font> = <font color="Maroon">v</font> as   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">L</font> ;<br/><a NAME="E12:48_1_2"/>
<font color="Maroon">v'</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">a1</font>
 <b>by </b><i>, <a class="ref" href="waybel_0.html#T17">WAYBEL_0:17</a></i>;<br/><a NAME="E13:48_1_2"/><b>then </b>
<font color="Maroon">c</font> <a href="funct_2.html#K3">.</a> <font color="Maroon">v'</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">a1</font>
 <b>by </b><i>, <a class="txt" href="waybel_8.html#E1:48"><i><font color="Green">E31</font></i></a>, <a class="ref" href="waybel_1.html#D2">WAYBEL_1:def 2</a></i>;<br/><a NAME="E14:48_1_2"/><b>then </b>
<font color="Maroon">z</font> <a href="hidden.html#R2">in</a>  <a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a1</font>
 <b>by </b><i>, <a class="ref" href="waybel_0.html#T17">WAYBEL_0:17</a></i>;<br/><b>hence </b><a NAME="E15:48_1_2"/>
<font color="Maroon">z</font> <a href="hidden.html#R2">in</a> <span class="p1">(<span class="default"><a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a1</font></span>)</span> <a href="subset_1.html#K9">/\</a> <span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p2">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p3">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span></span>)</span>
 <b>by </b><i>, <a class="ref" href="xboole_0.html#D3">XBOOLE_0:def 3</a></i>;<br/></div><b>end;</b></div><a NAME="E30:48_1"/><b>then </b><i><font color="Green">E141</font></i>: 
<font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p1">(<span class="default"><a href="waybel_8.html#K2" target="_self">compactbelow</a> <font color="Maroon">a1</font></span>)</span> <a href="tarski.html#R1">c=</a> <span class="p1">(<span class="default"><a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a1</font></span>)</span> <a href="subset_1.html#K9">/\</a> <span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p2">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p3">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span></span>)</span>
 <b>by </b><i><a class="ref" href="tarski.html#D3">TARSKI:def 3</a></i>;<br/><div><a class="txt" onclick="hs2(this)" href="javascript:()" title="48_1_3"><b>now </b></a><div class="add"><b>let </b><font color="Maroon">z</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>assume </b><a NAME="E1:48_1_3"/><i><font color="Green">E142</font></i>: 
<font color="Maroon">z</font> <a href="hidden.html#R2">in</a> <span class="p1">(<span class="default"><a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a1</font></span>)</span> <a href="subset_1.html#K9">/\</a> <span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p2">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p3">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span></span>)</span>
 ;<br/><a NAME="E2:48_1_3"/><b>then </b><i><font color="Green">E143</font></i>: 
( <font color="Maroon">z</font> <a href="hidden.html#R2">in</a>  <a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a1</font> &amp; <font color="Maroon">z</font> <a href="hidden.html#R2">in</a> <font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p1">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p2">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span> )
 <b>by </b><i><a class="ref" href="xboole_0.html#D3">XBOOLE_0:def 3</a></i>;<br/><b>reconsider </b><font color="Maroon">z1</font> = <font color="Maroon">z</font> as   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">L</font> <b>by </b><i/>;<br/><b>reconsider </b><font color="Maroon">z2</font> = <font color="Maroon">z1</font> as   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">Imc</font> <b>by </b><i>, , <a class="ref" href="yellow_0.html#D15">YELLOW_0:def 15</a></i>;<br/><a NAME="E5:48_1_3"/>
<font color="Maroon">z1</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">a1</font>
 <b>by </b><i>, <a class="ref" href="waybel_0.html#T17">WAYBEL_0:17</a></i>;<br/><a NAME="E6:48_1_3"/><b>then </b>
<font color="Maroon">z2</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">a</font>
 <b>by </b><i>, <a class="ref" href="yellow_0.html#T61">YELLOW_0:61</a></i>;<br/><a NAME="E7:48_1_3"/><b>then </b>
<font color="Maroon">z</font> <a href="hidden.html#R2">in</a>  <a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a</font>
 <b>by </b><i><a class="ref" href="waybel_0.html#T17">WAYBEL_0:17</a></i>;<br/><b>hence </b><a NAME="E8:48_1_3"/>
<font color="Maroon">z</font> <a href="hidden.html#R2">in</a> <span class="p1">(<span class="default"><a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a</font></span>)</span> <a href="subset_1.html#K9">/\</a> <span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p2">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p3">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span></span>)</span>
 <b>by </b><i>, <a class="ref" href="xboole_0.html#D3">XBOOLE_0:def 3</a></i>;<br/></div><b>end;</b></div><a NAME="E32:48_1"/><b>then </b>
<span class="p1">(<span class="default"><a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a1</font></span>)</span> <a href="subset_1.html#K9">/\</a> <span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p2">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p3">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span></span>)</span> <a href="tarski.html#R1">c=</a> <span class="p1">(<span class="default"><a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a</font></span>)</span> <a href="subset_1.html#K9">/\</a> <span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p2">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p3">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span></span>)</span>
 <b>by </b><i><a class="ref" href="tarski.html#D3">TARSKI:def 3</a></i>;<br/><a NAME="E33:48_1"/><b>then </b>
<font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p1">(<span class="default"><a href="waybel_8.html#K2" target="_self">compactbelow</a> <font color="Maroon">a1</font></span>)</span> <a href="tarski.html#R1">c=</a> <span class="p1">(<span class="default"><a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a</font></span>)</span> <a href="subset_1.html#K9">/\</a> <span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p2">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p3">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span></span>)</span>
 <b>by </b><i><a class="txt" href="waybel_8.html#E12:48_1"><i><font color="Green">E42</font></i></a>, <a class="ref" href="xboole_1.html#T1">XBOOLE_1:1</a></i>;<br/><a NAME="E34:48_1"/><b>then </b>
<font color="Maroon">a</font> <a href="orders_2.html#R3">&lt;=</a>  <a href="yellow_0.html#K1">"\/"</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a</font></span>)</span> <a href="subset_1.html#K9">/\</a> <span class="p2">(<span class="default"><font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p3">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p4">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span></span>)</span></span>)</span>,<font color="Maroon">Imc</font>
 <b>by </b><i><a class="txt" href="waybel_8.html#E6:48_1"><i><font color="Green">E39</font></i></a>, , <a class="txt" href="waybel_8.html#E8:48_1"><i><font color="Green">E41</font></i></a>, <a class="ref" href="yellow_0.html#T34">YELLOW_0:34</a></i>;<br/><b>then consider </b><font color="Maroon">k</font> being   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">Imc</font><b> such that </b><br/><a NAME="E36:48_1"/><i><font color="Green">E144</font></i>: 
( <font color="Maroon">k</font> <a href="hidden.html#R2">in</a> <span class="p1">(<span class="default"><a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a</font></span>)</span> <a href="subset_1.html#K9">/\</a> <span class="p1">(<span class="default"><font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p2">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p3">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span></span>)</span> &amp; <font color="Maroon">a</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">k</font> )
 <b>by </b><i>, <a class="txt" href="waybel_8.html#E2:48"><i><font color="Green">E33</font></i></a>, <a class="ref" href="waybel_3.html#D1">WAYBEL_3:def 1</a></i>;<br/><a NAME="E37:48_1"/><i><font color="Green">E145</font></i>: 
( <font color="Maroon">k</font> <a href="hidden.html#R2">in</a>  <a href="waybel_0.html#K5">downarrow</a> <font color="Maroon">a</font> &amp; <font color="Maroon">k</font> <a href="hidden.html#R2">in</a> <font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p1">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p2">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span> )
 <b>by </b><i>, <a class="ref" href="xboole_0.html#D3">XBOOLE_0:def 3</a></i>;<br/><a NAME="E38:48_1"/><b>then </b>
<font color="Maroon">k</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">a</font>
 <b>by </b><i><a class="ref" href="waybel_0.html#T17">WAYBEL_0:17</a></i>;<br/><b>hence </b><a NAME="E39:48_1"/>
<font color="Maroon">a'</font> <a href="hidden.html#R2">in</a> <font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p1">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p2">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span>
 <b>by </b><i>, , <a class="ref" href="orders_2.html#T25">ORDERS_2:25</a></i>;<br/></div><b>end;</b></div>
<a NAME="E4:48"/><b>then </b>
 <a href="pre_topc.html#K2">[#]</a> <span class="p1">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <span class="p2">(<span class="default"><a href="yellow_2.html#K1">Image</a> <font color="Maroon">c</font></span>)</span></span>)</span> <a href="tarski.html#R1">c=</a> <font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p1">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p2">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span>
 
<b>by </b><i><a class="ref" href="tarski.html#D3">TARSKI:def 3</a></i>;<br/>
<b>hence </b><a NAME="E5:48"/>
<font color="Maroon">c</font> <a href="relset_1.html#K10">.:</a> <span class="p1">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <span class="p2">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <font color="Maroon">L</font></span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="pre_topc.html#K2">[#]</a> <span class="p1">(<span class="default"><a href="waybel_8.html#K1" target="_self">CompactSublatt</a> <span class="p2">(<span class="default"><a href="yellow_2.html#K1">Image</a> <font color="Maroon">c</font></span>)</span></span>)</span>
 <b>by </b><i>, <a class="ref" href="xboole_0.html#D10">XBOOLE_0:def 10</a></i>;<br/>


</div>
