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

<b>let </b><font color="Maroon" title="c1">X</font> be   <a href="analmetr.html#NM2" title="ANALMETR:NM.2">OrtAfPl</a>;<br/>

<a NAME="E1:25"/><i><font color="Green" title="E15">A1</font></i>: 
(  <a href="analmetr.html#K3" title="ANALMETR:func.3">Af</a> <font color="Maroon" title="c1">X</font> <a href="conmetr1.html#NR3" title="CONMETR1:NR.3">satisfies_SCH</a>  implies  <a href="conmetr.html#NR6" title="CONMETR:NR.6">SCH_holds_in</a> <font color="Maroon" title="c1">X</font> )
 
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="25_1"><b>proof </b></a><div class="add">

<b>assume </b><a NAME="E1:25_1"/><i><font color="Green" title="E16">A2</font></i>: 
 <a href="analmetr.html#K3" title="ANALMETR:func.3">Af</a> <font color="Maroon" title="c1">X</font> <a href="conmetr1.html#NR3" title="CONMETR1:NR.3">satisfies_SCH</a> 
 ;<br/>

<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="25_1_1"><b>now </b></a><div class="add"><b>let </b><font color="Maroon" title="c2">a1'</font>, <font color="Maroon" title="c3">a2'</font>, <font color="Maroon" title="c4">a3'</font>, <font color="Maroon" title="c5">a4'</font>, <font color="Maroon" title="c6">b1'</font>, <font color="Maroon" title="c7">b2'</font>, <font color="Maroon" title="c8">b3'</font>, <font color="Maroon" title="c9">b4'</font> be   <a href="struct_0.html#NM1" title="STRUCT_0:NM.1">Element</a> of <font color="Maroon" title="c1">X</font>;<br/><b>let </b><font color="Maroon" title="c10">M'</font>, <font color="Maroon" title="c11">N'</font> be   <a href="struct_0.html#NM2" title="STRUCT_0:NM.2">Subset</a> of <font color="Maroon" title="c1">X</font>;<br/><b>assume </b><a NAME="E1:25_1_1"/><i><font color="Green" title="E17">A3</font></i>: 
( <font color="Maroon" title="c10">M'</font> <a href="analmetr.html#NR6" title="ANALMETR:NR.6">is_line</a>  &amp; <font color="Maroon" title="c11">N'</font> <a href="analmetr.html#NR6" title="ANALMETR:NR.6">is_line</a>  &amp; <font color="Maroon" title="c2">a1'</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c10">M'</font> &amp; <font color="Maroon" title="c4">a3'</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c10">M'</font> &amp; <font color="Maroon" title="c6">b1'</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c10">M'</font> &amp; <font color="Maroon" title="c8">b3'</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c10">M'</font> &amp; <font color="Maroon" title="c3">a2'</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c11">N'</font> &amp; <font color="Maroon" title="c5">a4'</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c11">N'</font> &amp; <font color="Maroon" title="c7">b2'</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c11">N'</font> &amp; <font color="Maroon" title="c9">b4'</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c11">N'</font> &amp; not <font color="Maroon" title="c5">a4'</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c10">M'</font> &amp; not <font color="Maroon" title="c3">a2'</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c10">M'</font> &amp; not <font color="Maroon" title="c7">b2'</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c10">M'</font> &amp; not <font color="Maroon" title="c9">b4'</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c10">M'</font> &amp; not <font color="Maroon" title="c2">a1'</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c11">N'</font> &amp; not <font color="Maroon" title="c4">a3'</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c11">N'</font> &amp; not <font color="Maroon" title="c6">b1'</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c11">N'</font> &amp; not <font color="Maroon" title="c8">b3'</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c11">N'</font> &amp; <font color="Maroon" title="c4">a3'</font>,<font color="Maroon" title="c3">a2'</font> <a href="analoaf.html#R2" title="ANALOAF:pred.2">//</a> <font color="Maroon" title="c8">b3'</font>,<font color="Maroon" title="c7">b2'</font> &amp; <font color="Maroon" title="c3">a2'</font>,<font color="Maroon" title="c2">a1'</font> <a href="analoaf.html#R2" title="ANALOAF:pred.2">//</a> <font color="Maroon" title="c7">b2'</font>,<font color="Maroon" title="c6">b1'</font> &amp; <font color="Maroon" title="c2">a1'</font>,<font color="Maroon" title="c5">a4'</font> <a href="analoaf.html#R2" title="ANALOAF:pred.2">//</a> <font color="Maroon" title="c6">b1'</font>,<font color="Maroon" title="c9">b4'</font> )
 ;<br/><b>reconsider </b><font color="Maroon" title="c12">M</font> = <font color="Maroon" title="c10">M'</font>, <font color="Maroon" title="c13">N</font> = <font color="Maroon" title="c11">N'</font> as   <a href="struct_0.html#NM2" title="STRUCT_0:NM.2">Subset</a> of <span class="p1">(<span class="default"><a href="analmetr.html#K3" title="ANALMETR:func.3">Af</a> <font color="Maroon" title="c1">X</font></span>)</span> <b>by </b><i><a class="ref" href="analmetr.html#T57" title="ANALMETR:th.57">ANALMETR:57</a></i>;<br/><a NAME="E3:25_1_1"/><i><font color="Green" title="E18">A4</font></i>: 
( <font color="Maroon" title="c12">M</font> <a href="aff_1.html#NR2" title="AFF_1:NR.2">is_line</a>  &amp; <font color="Maroon" title="c13">N</font> <a href="aff_1.html#NR2" title="AFF_1:NR.2">is_line</a>  )
 <b>by </b><i><a class="txt" href="conmetr1.html#E1:25_1_1"><i><font color="Green" title="E17">A3</font></i></a>, <a class="ref" href="analmetr.html#T58" title="ANALMETR:th.58">ANALMETR:58</a></i>;<br/><b>reconsider </b><font color="Maroon" title="c14">a1</font> = <font color="Maroon" title="c2">a1'</font>, <font color="Maroon" title="c15">a2</font> = <font color="Maroon" title="c3">a2'</font>, <font color="Maroon" title="c16">a3</font> = <font color="Maroon" title="c4">a3'</font>, <font color="Maroon" title="c17">a4</font> = <font color="Maroon" title="c5">a4'</font>, <font color="Maroon" title="c18">b1</font> = <font color="Maroon" title="c6">b1'</font>, <font color="Maroon" title="c19">b2</font> = <font color="Maroon" title="c7">b2'</font>, <font color="Maroon" title="c20">b3</font> = <font color="Maroon" title="c8">b3'</font>, <font color="Maroon" title="c21">b4</font> = <font color="Maroon" title="c9">b4'</font> as   <a href="struct_0.html#NM1" title="STRUCT_0:NM.1">Element</a> of <span class="p1">(<span class="default"><a href="analmetr.html#K3" title="ANALMETR:func.3">Af</a> <font color="Maroon" title="c1">X</font></span>)</span> <b>by </b><i><a class="ref" href="analmetr.html#T47" title="ANALMETR:th.47">ANALMETR:47</a></i>;<br/><a NAME="E5:25_1_1"/>
( <font color="Maroon" title="c16">a3</font>,<font color="Maroon" title="c15">a2</font> <a href="analoaf.html#R2" title="ANALOAF:pred.2">//</a> <font color="Maroon" title="c20">b3</font>,<font color="Maroon" title="c19">b2</font> &amp; <font color="Maroon" title="c15">a2</font>,<font color="Maroon" title="c14">a1</font> <a href="analoaf.html#R2" title="ANALOAF:pred.2">//</a> <font color="Maroon" title="c19">b2</font>,<font color="Maroon" title="c18">b1</font> &amp; <font color="Maroon" title="c14">a1</font>,<font color="Maroon" title="c17">a4</font> <a href="analoaf.html#R2" title="ANALOAF:pred.2">//</a> <font color="Maroon" title="c18">b1</font>,<font color="Maroon" title="c21">b4</font> )
 <b>by </b><i><a class="txt" href="conmetr1.html#E1:25_1_1"><i><font color="Green" title="E17">A3</font></i></a>, <a class="ref" href="analmetr.html#T48" title="ANALMETR:th.48">ANALMETR:48</a></i>;<br/><a NAME="E6:25_1_1"/><b>then </b>
<font color="Maroon" title="c16">a3</font>,<font color="Maroon" title="c17">a4</font> <a href="analoaf.html#R2" title="ANALOAF:pred.2">//</a> <font color="Maroon" title="c20">b3</font>,<font color="Maroon" title="c21">b4</font>
 <b>by </b><i><a class="txt" href="conmetr1.html#E1:25_1"><i><font color="Green" title="E16">A2</font></i></a>, <a class="txt" href="conmetr1.html#E1:25_1_1"><i><font color="Green" title="E17">A3</font></i></a>, <a class="txt" href="conmetr1.html#E3:25_1_1"><i><font color="Green" title="E18">A4</font></i></a>, <a class="ref" href="conmetr1.html#D3" target="_self" title="CONMETR1:def.3">Def3</a></i>;<br/><b>hence </b><a NAME="E7:25_1_1"/>
<font color="Maroon" title="c4">a3'</font>,<font color="Maroon" title="c5">a4'</font> <a href="analoaf.html#R2" title="ANALOAF:pred.2">//</a> <font color="Maroon" title="c8">b3'</font>,<font color="Maroon" title="c9">b4'</font>
 <b>by </b><i><a class="ref" href="analmetr.html#T48" title="ANALMETR:th.48">ANALMETR:48</a></i>;<br/></div><b>end;</b></div>
<b>hence </b><a NAME="E3:25_1"/>
 <a href="conmetr.html#NR6" title="CONMETR:NR.6">SCH_holds_in</a> <font color="Maroon" title="c1">X</font>
 <b>by </b><i><a class="ref" href="conmetr.html#D6" title="CONMETR:def.6">CONMETR:def 6</a></i>;<br/>


</div><b>end;</b></div>
<a NAME="E2:25"/>
(  <a href="conmetr.html#NR6" title="CONMETR:NR.6">SCH_holds_in</a> <font color="Maroon" title="c1">X</font> implies  <a href="analmetr.html#K3" title="ANALMETR:func.3">Af</a> <font color="Maroon" title="c1">X</font> <a href="conmetr1.html#NR3" title="CONMETR1:NR.3">satisfies_SCH</a>  )
 
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="25_2"><b>proof </b></a><div class="add">

<b>assume </b><a NAME="E1:25_2"/><i><font color="Green" title="E16">A5</font></i>: 
 <a href="conmetr.html#NR6" title="CONMETR:NR.6">SCH_holds_in</a> <font color="Maroon" title="c1">X</font>
 ;<br/>

<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="25_2_1"><b>now </b></a><div class="add"><b>let </b><font color="Maroon" title="c2">a1</font>, <font color="Maroon" title="c3">a2</font>, <font color="Maroon" title="c4">a3</font>, <font color="Maroon" title="c5">a4</font>, <font color="Maroon" title="c6">b1</font>, <font color="Maroon" title="c7">b2</font>, <font color="Maroon" title="c8">b3</font>, <font color="Maroon" title="c9">b4</font> be   <a href="struct_0.html#NM1" title="STRUCT_0:NM.1">Element</a> of <span class="p1">(<span class="default"><a href="analmetr.html#K3" title="ANALMETR:func.3">Af</a> <font color="Maroon" title="c1">X</font></span>)</span>;<br/><b>let </b><font color="Maroon" title="c10">M</font>, <font color="Maroon" title="c11">N</font> be   <a href="struct_0.html#NM2" title="STRUCT_0:NM.2">Subset</a> of <span class="p1">(<span class="default"><a href="analmetr.html#K3" title="ANALMETR:func.3">Af</a> <font color="Maroon" title="c1">X</font></span>)</span>;<br/><b>assume </b><a NAME="E1:25_2_1"/><i><font color="Green" title="E17">A6</font></i>: 
( <font color="Maroon" title="c10">M</font> <a href="aff_1.html#NR2" title="AFF_1:NR.2">is_line</a>  &amp; <font color="Maroon" title="c11">N</font> <a href="aff_1.html#NR2" title="AFF_1:NR.2">is_line</a>  &amp; <font color="Maroon" title="c2">a1</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c10">M</font> &amp; <font color="Maroon" title="c4">a3</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c10">M</font> &amp; <font color="Maroon" title="c6">b1</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c10">M</font> &amp; <font color="Maroon" title="c8">b3</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c10">M</font> &amp; <font color="Maroon" title="c3">a2</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c11">N</font> &amp; <font color="Maroon" title="c5">a4</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c11">N</font> &amp; <font color="Maroon" title="c7">b2</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c11">N</font> &amp; <font color="Maroon" title="c9">b4</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c11">N</font> &amp; not <font color="Maroon" title="c5">a4</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c10">M</font> &amp; not <font color="Maroon" title="c3">a2</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c10">M</font> &amp; not <font color="Maroon" title="c7">b2</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c10">M</font> &amp; not <font color="Maroon" title="c9">b4</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c10">M</font> &amp; not <font color="Maroon" title="c2">a1</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c11">N</font> &amp; not <font color="Maroon" title="c4">a3</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c11">N</font> &amp; not <font color="Maroon" title="c6">b1</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c11">N</font> &amp; not <font color="Maroon" title="c8">b3</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c11">N</font> &amp; <font color="Maroon" title="c4">a3</font>,<font color="Maroon" title="c3">a2</font> <a href="analoaf.html#R2" title="ANALOAF:pred.2">//</a> <font color="Maroon" title="c8">b3</font>,<font color="Maroon" title="c7">b2</font> &amp; <font color="Maroon" title="c3">a2</font>,<font color="Maroon" title="c2">a1</font> <a href="analoaf.html#R2" title="ANALOAF:pred.2">//</a> <font color="Maroon" title="c7">b2</font>,<font color="Maroon" title="c6">b1</font> &amp; <font color="Maroon" title="c2">a1</font>,<font color="Maroon" title="c5">a4</font> <a href="analoaf.html#R2" title="ANALOAF:pred.2">//</a> <font color="Maroon" title="c6">b1</font>,<font color="Maroon" title="c9">b4</font> )
 ;<br/><b>reconsider </b><font color="Maroon" title="c12">M'</font> = <font color="Maroon" title="c10">M</font>, <font color="Maroon" title="c13">N'</font> = <font color="Maroon" title="c11">N</font> as   <a href="struct_0.html#NM2" title="STRUCT_0:NM.2">Subset</a> of <font color="Maroon" title="c1">X</font> <b>by </b><i><a class="ref" href="analmetr.html#T57" title="ANALMETR:th.57">ANALMETR:57</a></i>;<br/><a NAME="E3:25_2_1"/><i><font color="Green" title="E18">A7</font></i>: 
( <font color="Maroon" title="c12">M'</font> <a href="analmetr.html#NR6" title="ANALMETR:NR.6">is_line</a>  &amp; <font color="Maroon" title="c13">N'</font> <a href="analmetr.html#NR6" title="ANALMETR:NR.6">is_line</a>  )
 <b>by </b><i><a class="txt" href="conmetr1.html#E1:25_2_1"><i><font color="Green" title="E17">A6</font></i></a>, <a class="ref" href="analmetr.html#T58" title="ANALMETR:th.58">ANALMETR:58</a></i>;<br/><b>reconsider </b><font color="Maroon" title="c14">a1'</font> = <font color="Maroon" title="c2">a1</font>, <font color="Maroon" title="c15">a2'</font> = <font color="Maroon" title="c3">a2</font>, <font color="Maroon" title="c16">a3'</font> = <font color="Maroon" title="c4">a3</font>, <font color="Maroon" title="c17">a4'</font> = <font color="Maroon" title="c5">a4</font>, <font color="Maroon" title="c18">b1'</font> = <font color="Maroon" title="c6">b1</font>, <font color="Maroon" title="c19">b2'</font> = <font color="Maroon" title="c7">b2</font>, <font color="Maroon" title="c20">b3'</font> = <font color="Maroon" title="c8">b3</font>, <font color="Maroon" title="c21">b4'</font> = <font color="Maroon" title="c9">b4</font> as   <a href="struct_0.html#NM1" title="STRUCT_0:NM.1">Element</a> of <font color="Maroon" title="c1">X</font> <b>by </b><i><a class="ref" href="analmetr.html#T47" title="ANALMETR:th.47">ANALMETR:47</a></i>;<br/><a NAME="E5:25_2_1"/>
( <font color="Maroon" title="c16">a3'</font>,<font color="Maroon" title="c15">a2'</font> <a href="analoaf.html#R2" title="ANALOAF:pred.2">//</a> <font color="Maroon" title="c20">b3'</font>,<font color="Maroon" title="c19">b2'</font> &amp; <font color="Maroon" title="c15">a2'</font>,<font color="Maroon" title="c14">a1'</font> <a href="analoaf.html#R2" title="ANALOAF:pred.2">//</a> <font color="Maroon" title="c19">b2'</font>,<font color="Maroon" title="c18">b1'</font> &amp; <font color="Maroon" title="c14">a1'</font>,<font color="Maroon" title="c17">a4'</font> <a href="analoaf.html#R2" title="ANALOAF:pred.2">//</a> <font color="Maroon" title="c18">b1'</font>,<font color="Maroon" title="c21">b4'</font> )
 <b>by </b><i><a class="txt" href="conmetr1.html#E1:25_2_1"><i><font color="Green" title="E17">A6</font></i></a>, <a class="ref" href="analmetr.html#T48" title="ANALMETR:th.48">ANALMETR:48</a></i>;<br/><a NAME="E6:25_2_1"/><b>then </b>
<font color="Maroon" title="c16">a3'</font>,<font color="Maroon" title="c17">a4'</font> <a href="analoaf.html#R2" title="ANALOAF:pred.2">//</a> <font color="Maroon" title="c20">b3'</font>,<font color="Maroon" title="c21">b4'</font>
 <b>by </b><i><a class="txt" href="conmetr1.html#E1:25_2"><i><font color="Green" title="E16">A5</font></i></a>, <a class="txt" href="conmetr1.html#E1:25_2_1"><i><font color="Green" title="E17">A6</font></i></a>, <a class="txt" href="conmetr1.html#E3:25_2_1"><i><font color="Green" title="E18">A7</font></i></a>, <a class="ref" href="conmetr.html#D6" title="CONMETR:def.6">CONMETR:def 6</a></i>;<br/><b>hence </b><a NAME="E7:25_2_1"/>
<font color="Maroon" title="c4">a3</font>,<font color="Maroon" title="c5">a4</font> <a href="analoaf.html#R2" title="ANALOAF:pred.2">//</a> <font color="Maroon" title="c8">b3</font>,<font color="Maroon" title="c9">b4</font>
 <b>by </b><i><a class="ref" href="analmetr.html#T48" title="ANALMETR:th.48">ANALMETR:48</a></i>;<br/></div><b>end;</b></div>
<b>hence </b><a NAME="E3:25_2"/>
 <a href="analmetr.html#K3" title="ANALMETR:func.3">Af</a> <font color="Maroon" title="c1">X</font> <a href="conmetr1.html#NR3" title="CONMETR1:NR.3">satisfies_SCH</a> 
 <b>by </b><i><a class="ref" href="conmetr1.html#D3" target="_self" title="CONMETR1:def.3">Def3</a></i>;<br/>


</div><b>end;</b></div>
<b>hence </b><a NAME="E3:25"/>
(  <a href="analmetr.html#K3" title="ANALMETR:func.3">Af</a> <font color="Maroon" title="c1">X</font> <a href="conmetr1.html#NR3" title="CONMETR1:NR.3">satisfies_SCH</a>  iff  <a href="conmetr.html#NR6" title="CONMETR:NR.6">SCH_holds_in</a> <font color="Maroon" title="c1">X</font> )
 <b>by </b><i><a class="txt" href="conmetr1.html#E1:25"><i><font color="Green" title="E15">A1</font></i></a></i>;<br/>


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