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

<b>let </b><font color="Maroon">X</font> be   <a href="diraf.html#NM2">AffinPlane</a>;<br/>

<a NAME="E1:14"/><i><font color="Green">E45</font></i>: 
( <font color="Maroon">X</font> <a href="conmetr1.html#NR3" target="_self">satisfies_SCH</a>  implies ( <font color="Maroon">X</font> <a href="conmetr1.html#NR1" target="_self">satisfies_minor_SCH</a>  &amp; <font color="Maroon">X</font> <a href="conmetr1.html#NR2" target="_self">satisfies_major_SCH</a>  ) )
 
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="14_1"><b>proof </b></a><div class="add">

<a NAME="E1:14_1"/><i><font color="Green">E46</font></i>: 
( <font color="Maroon">X</font> <a href="conmetr1.html#NR3" target="_self">satisfies_SCH</a>  implies <font color="Maroon">X</font> <a href="conmetr1.html#NR1" target="_self">satisfies_minor_SCH</a>  )
 
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="14_1_1"><b>proof </b></a><div class="add">

<b>assume </b><a NAME="E1:14_1_1"/><i><font color="Green">E47</font></i>: 
<font color="Maroon">X</font> <a href="conmetr1.html#NR3" target="_self">satisfies_SCH</a> 
 ;<br/>

<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="14_1_1_1"><b>now </b></a><div class="add"><b>let </b><font color="Maroon">a1</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">X</font>;<br/><b>let </b><font color="Maroon">a2</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">X</font>;<br/><b>let </b><font color="Maroon">a3</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">X</font>;<br/><b>let </b><font color="Maroon">a4</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">X</font>;<br/><b>let </b><font color="Maroon">b1</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">X</font>;<br/><b>let </b><font color="Maroon">b2</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">X</font>;<br/><b>let </b><font color="Maroon">b3</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">X</font>;<br/><b>let </b><font color="Maroon">b4</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">X</font>;<br/><b>let </b><font color="Maroon">M</font> be   <a href="struct_0.html#NM2">Subset</a> of <font color="Maroon">X</font>;<br/><b>let </b><font color="Maroon">N</font> be   <a href="struct_0.html#NM2">Subset</a> of <font color="Maroon">X</font>;<br/><b>assume </b><a NAME="E1:14_1_1_1"/><i><font color="Green">E48</font></i>: 
( <font color="Maroon">M</font> <a href="aff_1.html#R4">//</a> <font color="Maroon">N</font> &amp; <font color="Maroon">a1</font> <a href="hidden.html#R2">in</a> <font color="Maroon">M</font> &amp; <font color="Maroon">a3</font> <a href="hidden.html#R2">in</a> <font color="Maroon">M</font> &amp; <font color="Maroon">b1</font> <a href="hidden.html#R2">in</a> <font color="Maroon">M</font> &amp; <font color="Maroon">b3</font> <a href="hidden.html#R2">in</a> <font color="Maroon">M</font> &amp; <font color="Maroon">a2</font> <a href="hidden.html#R2">in</a> <font color="Maroon">N</font> &amp; <font color="Maroon">a4</font> <a href="hidden.html#R2">in</a> <font color="Maroon">N</font> &amp; <font color="Maroon">b2</font> <a href="hidden.html#R2">in</a> <font color="Maroon">N</font> &amp; <font color="Maroon">b4</font> <a href="hidden.html#R2">in</a> <font color="Maroon">N</font> &amp; not <font color="Maroon">a4</font> <a href="hidden.html#R2">in</a> <font color="Maroon">M</font> &amp; not <font color="Maroon">a2</font> <a href="hidden.html#R2">in</a> <font color="Maroon">M</font> &amp; not <font color="Maroon">b2</font> <a href="hidden.html#R2">in</a> <font color="Maroon">M</font> &amp; not <font color="Maroon">b4</font> <a href="hidden.html#R2">in</a> <font color="Maroon">M</font> &amp; not <font color="Maroon">a1</font> <a href="hidden.html#R2">in</a> <font color="Maroon">N</font> &amp; not <font color="Maroon">a3</font> <a href="hidden.html#R2">in</a> <font color="Maroon">N</font> &amp; not <font color="Maroon">b1</font> <a href="hidden.html#R2">in</a> <font color="Maroon">N</font> &amp; not <font color="Maroon">b3</font> <a href="hidden.html#R2">in</a> <font color="Maroon">N</font> &amp; <font color="Maroon">a3</font>,<font color="Maroon">a2</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">b3</font>,<font color="Maroon">b2</font> &amp; <font color="Maroon">a2</font>,<font color="Maroon">a1</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">b2</font>,<font color="Maroon">b1</font> &amp; <font color="Maroon">a1</font>,<font color="Maroon">a4</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">b1</font>,<font color="Maroon">b4</font> )
 ;<br/><a NAME="E2:14_1_1_1"/><b>then </b>
( <font color="Maroon">M</font> is <a href="aff_1.html#V1">being_line</a> &amp; <font color="Maroon">N</font> is <a href="aff_1.html#V1">being_line</a> )
 <b>by </b><i><a class="ref" href="aff_1.html#T50">AFF_1:50</a></i>;<br/><b>hence </b><a NAME="E3:14_1_1_1"/>
<font color="Maroon">a3</font>,<font color="Maroon">a4</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">b3</font>,<font color="Maroon">b4</font>
 <b>by </b><i>, , </i>;<br/></div><b>end;</b></div>
<b>hence </b><a NAME="E3:14_1_1"/>
<font color="Maroon">X</font> <a href="conmetr1.html#NR1" target="_self">satisfies_minor_SCH</a> 
 <b>by </b><i/>;<br/>


</div><b>end;</b></div>
<a NAME="E2:14_1"/>
( <font color="Maroon">X</font> <a href="conmetr1.html#NR3" target="_self">satisfies_SCH</a>  implies <font color="Maroon">X</font> <a href="conmetr1.html#NR2" target="_self">satisfies_major_SCH</a>  )
 
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="14_1_2"><b>proof </b></a><div class="add">

<b>assume </b><a NAME="E1:14_1_2"/>
<font color="Maroon">X</font> <a href="conmetr1.html#NR3" target="_self">satisfies_SCH</a> 
 ;<br/>

<a NAME="E2:14_1_2"/><b>then </b>
for <font color="Olive">o</font>, <font color="Olive">a1</font>, <font color="Olive">a2</font>, <font color="Olive">a3</font>, <font color="Olive">a4</font>, <font color="Olive">b1</font>, <font color="Olive">b2</font>, <font color="Olive">b3</font>, <font color="Olive">b4</font> being  <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">X</font><br/> for <font color="Olive">M</font>, <font color="Olive">N</font> being  <a href="struct_0.html#NM2">Subset</a> of <font color="Maroon">X</font>  st <font color="Olive">M</font> is <a href="aff_1.html#V1">being_line</a> &amp; <font color="Olive">N</font> is <a href="aff_1.html#V1">being_line</a> &amp; <font color="Olive">o</font> <a href="hidden.html#R2">in</a> <font color="Olive">M</font> &amp; <font color="Olive">o</font> <a href="hidden.html#R2">in</a> <font color="Olive">N</font> &amp; <font color="Olive">a1</font> <a href="hidden.html#R2">in</a> <font color="Olive">M</font> &amp; <font color="Olive">a3</font> <a href="hidden.html#R2">in</a> <font color="Olive">M</font> &amp; <font color="Olive">b1</font> <a href="hidden.html#R2">in</a> <font color="Olive">M</font> &amp; <font color="Olive">b3</font> <a href="hidden.html#R2">in</a> <font color="Olive">M</font> &amp; <font color="Olive">a2</font> <a href="hidden.html#R2">in</a> <font color="Olive">N</font> &amp; <font color="Olive">a4</font> <a href="hidden.html#R2">in</a> <font color="Olive">N</font> &amp; <font color="Olive">b2</font> <a href="hidden.html#R2">in</a> <font color="Olive">N</font> &amp; <font color="Olive">b4</font> <a href="hidden.html#R2">in</a> <font color="Olive">N</font> &amp; not <font color="Olive">a4</font> <a href="hidden.html#R2">in</a> <font color="Olive">M</font> &amp; not <font color="Olive">a2</font> <a href="hidden.html#R2">in</a> <font color="Olive">M</font> &amp; not <font color="Olive">b2</font> <a href="hidden.html#R2">in</a> <font color="Olive">M</font> &amp; not <font color="Olive">b4</font> <a href="hidden.html#R2">in</a> <font color="Olive">M</font> &amp; not <font color="Olive">a1</font> <a href="hidden.html#R2">in</a> <font color="Olive">N</font> &amp; not <font color="Olive">a3</font> <a href="hidden.html#R2">in</a> <font color="Olive">N</font> &amp; not <font color="Olive">b1</font> <a href="hidden.html#R2">in</a> <font color="Olive">N</font> &amp; not <font color="Olive">b3</font> <a href="hidden.html#R2">in</a> <font color="Olive">N</font> &amp; <font color="Olive">a3</font>,<font color="Olive">a2</font> <a href="analoaf.html#R2">//</a> <font color="Olive">b3</font>,<font color="Olive">b2</font> &amp; <font color="Olive">a2</font>,<font color="Olive">a1</font> <a href="analoaf.html#R2">//</a> <font color="Olive">b2</font>,<font color="Olive">b1</font> &amp; <font color="Olive">a1</font>,<font color="Olive">a4</font> <a href="analoaf.html#R2">//</a> <font color="Olive">b1</font>,<font color="Olive">b4</font> holds <br/><font color="Olive">a3</font>,<font color="Olive">a4</font> <a href="analoaf.html#R2">//</a> <font color="Olive">b3</font>,<font color="Olive">b4</font>
 
<b>by </b><i/>;<br/>
<b>hence </b><a NAME="E3:14_1_2"/>
<font color="Maroon">X</font> <a href="conmetr1.html#NR2" target="_self">satisfies_major_SCH</a> 
 <b>by </b><i/>;<br/>


</div><b>end;</b></div>
<b>hence </b><a NAME="E3:14_1"/>
( <font color="Maroon">X</font> <a href="conmetr1.html#NR3" target="_self">satisfies_SCH</a>  implies ( <font color="Maroon">X</font> <a href="conmetr1.html#NR1" target="_self">satisfies_minor_SCH</a>  &amp; <font color="Maroon">X</font> <a href="conmetr1.html#NR2" target="_self">satisfies_major_SCH</a>  ) )
 <b>by </b><i/>;<br/>


</div><b>end;</b></div>
<a NAME="E2:14"/>
( <font color="Maroon">X</font> <a href="conmetr1.html#NR1" target="_self">satisfies_minor_SCH</a>  &amp; <font color="Maroon">X</font> <a href="conmetr1.html#NR2" target="_self">satisfies_major_SCH</a>  implies <font color="Maroon">X</font> <a href="conmetr1.html#NR3" target="_self">satisfies_SCH</a>  )
 
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="14_2"><b>proof </b></a><div class="add">

<b>assume </b><a NAME="E1:14_2"/><i><font color="Green">E49</font></i>: 
( <font color="Maroon">X</font> <a href="conmetr1.html#NR1" target="_self">satisfies_minor_SCH</a>  &amp; <font color="Maroon">X</font> <a href="conmetr1.html#NR2" target="_self">satisfies_major_SCH</a>  )
 ;<br/>

<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="14_2_1"><b>now </b></a><div class="add"><b>let </b><font color="Maroon">a1</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">X</font>;<br/><b>let </b><font color="Maroon">a2</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">X</font>;<br/><b>let </b><font color="Maroon">a3</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">X</font>;<br/><b>let </b><font color="Maroon">a4</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">X</font>;<br/><b>let </b><font color="Maroon">b1</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">X</font>;<br/><b>let </b><font color="Maroon">b2</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">X</font>;<br/><b>let </b><font color="Maroon">b3</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">X</font>;<br/><b>let </b><font color="Maroon">b4</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">X</font>;<br/><b>let </b><font color="Maroon">M</font> be   <a href="struct_0.html#NM2">Subset</a> of <font color="Maroon">X</font>;<br/><b>let </b><font color="Maroon">N</font> be   <a href="struct_0.html#NM2">Subset</a> of <font color="Maroon">X</font>;<br/><b>assume </b><a NAME="E1:14_2_1"/><i><font color="Green">E50</font></i>: 
( <font color="Maroon">M</font> is <a href="aff_1.html#V1">being_line</a> &amp; <font color="Maroon">N</font> is <a href="aff_1.html#V1">being_line</a> &amp; <font color="Maroon">a1</font> <a href="hidden.html#R2">in</a> <font color="Maroon">M</font> &amp; <font color="Maroon">a3</font> <a href="hidden.html#R2">in</a> <font color="Maroon">M</font> &amp; <font color="Maroon">b1</font> <a href="hidden.html#R2">in</a> <font color="Maroon">M</font> &amp; <font color="Maroon">b3</font> <a href="hidden.html#R2">in</a> <font color="Maroon">M</font> &amp; <font color="Maroon">a2</font> <a href="hidden.html#R2">in</a> <font color="Maroon">N</font> &amp; <font color="Maroon">a4</font> <a href="hidden.html#R2">in</a> <font color="Maroon">N</font> &amp; <font color="Maroon">b2</font> <a href="hidden.html#R2">in</a> <font color="Maroon">N</font> &amp; <font color="Maroon">b4</font> <a href="hidden.html#R2">in</a> <font color="Maroon">N</font> &amp; not <font color="Maroon">a4</font> <a href="hidden.html#R2">in</a> <font color="Maroon">M</font> &amp; not <font color="Maroon">a2</font> <a href="hidden.html#R2">in</a> <font color="Maroon">M</font> &amp; not <font color="Maroon">b2</font> <a href="hidden.html#R2">in</a> <font color="Maroon">M</font> &amp; not <font color="Maroon">b4</font> <a href="hidden.html#R2">in</a> <font color="Maroon">M</font> &amp; not <font color="Maroon">a1</font> <a href="hidden.html#R2">in</a> <font color="Maroon">N</font> &amp; not <font color="Maroon">a3</font> <a href="hidden.html#R2">in</a> <font color="Maroon">N</font> &amp; not <font color="Maroon">b1</font> <a href="hidden.html#R2">in</a> <font color="Maroon">N</font> &amp; not <font color="Maroon">b3</font> <a href="hidden.html#R2">in</a> <font color="Maroon">N</font> &amp; <font color="Maroon">a3</font>,<font color="Maroon">a2</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">b3</font>,<font color="Maroon">b2</font> &amp; <font color="Maroon">a2</font>,<font color="Maroon">a1</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">b2</font>,<font color="Maroon">b1</font> &amp; <font color="Maroon">a1</font>,<font color="Maroon">a4</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">b1</font>,<font color="Maroon">b4</font> )
 ;<br/><div><a class="txt" onclick="hs2(this)" href="javascript:()" title="14_2_1_1"><b>now </b></a><div class="add"><b>assume </b><a NAME="E1:14_2_1_1"/>
not <font color="Maroon">M</font> <a href="aff_1.html#R4">//</a> <font color="Maroon">N</font>
 ;<br/><a NAME="E2:14_2_1_1"/><b>then </b>
 ex <font color="Olive">o</font> being  <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">X</font> st <br/>( <font color="Olive">o</font> <a href="hidden.html#R2">in</a> <font color="Maroon">M</font> &amp; <font color="Olive">o</font> <a href="hidden.html#R2">in</a> <font color="Maroon">N</font> )
 <b>by </b><i>, <a class="ref" href="aff_1.html#T72">AFF_1:72</a></i>;<br/><b>hence </b><a NAME="E3:14_2_1_1"/>
<font color="Maroon">a3</font>,<font color="Maroon">a4</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">b3</font>,<font color="Maroon">b4</font>
 <b>by </b><i>, , </i>;<br/></div><b>end;</b></div><b>hence </b><a NAME="E3:14_2_1"/>
<font color="Maroon">a3</font>,<font color="Maroon">a4</font> <a href="analoaf.html#R2">//</a> <font color="Maroon">b3</font>,<font color="Maroon">b4</font>
 <b>by </b><i>, , </i>;<br/></div><b>end;</b></div>
<b>hence </b><a NAME="E3:14_2"/>
<font color="Maroon">X</font> <a href="conmetr1.html#NR3" target="_self">satisfies_SCH</a> 
 <b>by </b><i/>;<br/>


</div><b>end;</b></div>
<b>hence </b><a NAME="E3:14"/>
( <font color="Maroon">X</font> <a href="conmetr1.html#NR3" target="_self">satisfies_SCH</a>  iff ( <font color="Maroon">X</font> <a href="conmetr1.html#NR1" target="_self">satisfies_minor_SCH</a>  &amp; <font color="Maroon">X</font> <a href="conmetr1.html#NR2" target="_self">satisfies_major_SCH</a>  ) )
 <b>by </b><i/>;<br/>


</div>
