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

<a NAME="E1:30_1_1"/><i><font color="Green" title="E18">A1</font></i>: 
 <a href="relat_1.html#NK2" title="RELAT_1:NK.2">dom</a> <span class="p1">(<span class="default"><a href="substut1.html#K15" title="SUBSTUT1:func.15">QSub</a>  <a href="relat_1.html#K7" title="RELAT_1:func.7">|</a> <a href="substut1.html#K38" title="SUBSTUT1:func.38">CQC-Sub-WFF</a> </span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="substut1.html#K38" title="SUBSTUT1:func.38">CQC-Sub-WFF</a> 
 
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="30_1_1_1"><b>proof </b></a><div class="add">

<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="30_1_1_1_1"><b>now </b></a><div class="add"><b>let </b><font color="Maroon" title="c1">a</font> be    <a href="hidden.html#M1" title="HIDDEN:mode.1">set</a> ; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> ( <font color="Maroon" title="c1">a</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="substut1.html#K38" title="SUBSTUT1:func.38">CQC-Sub-WFF</a>  implies <font color="Maroon" title="c1">a</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="relat_1.html#NK2" title="RELAT_1:NK.2">dom</a> <a href="substut1.html#K15" title="SUBSTUT1:func.15">QSub</a>  )</span><br/><b>assume </b><a NAME="E1:30_1_1_1_1"/><i><font color="Green" title="E19">A2</font></i>: 
<font color="Maroon" title="c1">a</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="substut1.html#K38" title="SUBSTUT1:func.38">CQC-Sub-WFF</a> 
 ; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> <font color="Maroon" title="c1">a</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="relat_1.html#NK2" title="RELAT_1:NK.2">dom</a> <a href="substut1.html#K15" title="SUBSTUT1:func.15">QSub</a> </span><br/><b>consider </b><font color="Maroon" title="c2">p</font> being    <a href="subset_1.html#M1" title="SUBSET_1:mode.1">Element</a> of  <a href="qc_lang1.html#K8" title="QC_LANG1:func.8">QC-WFF</a> , <font color="Maroon" title="c3">Sub</font> being   <a href="substut1.html#NM1" title="SUBSTUT1:NM.1">CQC_Substitution</a><b> such that </b><br/><a NAME="E3:30_1_1_1_1"/><i><font color="Green" title="E20">A3</font></i>: 
<font color="Maroon" title="c1">a</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="domain_1.html#K1" title="DOMAIN_1:func.1">[</a><span class="default"><font color="Maroon" title="c2">p</font>,<font color="Maroon" title="c3">Sub</font></span><a href="domain_1.html#K1" title="DOMAIN_1:func.1">]</a></span>
 <b>by </b><i><a class="txt" href="#E1:30_1_1_1_1"><i><font color="Green" title="E19">A2</font></i></a>, <a class="ref" href="substut1.html#T8" title="SUBSTUT1:th.8">SUBSTUT1:8</a></i>;<br/><div><i><font color="Green" title="E21">A4</font></i>: <a class="txt" onclick="hs2(this)" href="javascript:()" title="30_1_1_1_1_1"><b>now </b></a><div class="add"><b>assume </b><a NAME="E1:30_1_1_1_1_1"/><i><font color="Green" title="E22">A5</font></i>: 
<font color="Maroon" title="c2">p</font> is <a href="qc_lang1.html#V5" title="QC_LANG1:attr.5">universal</a>
 ; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> <font color="Maroon" title="c1">a</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="relat_1.html#NK2" title="RELAT_1:NK.2">dom</a> <a href="substut1.html#K15" title="SUBSTUT1:func.15">QSub</a> </span><br/><b>set </b><font color="Maroon" title="c4">b</font> =  <a href="substut1.html#K14" title="SUBSTUT1:func.14">ExpandSub</a> <span class="p1">(<span class="default"><a href="qc_lang1.html#K20" title="QC_LANG1:func.20">bound_in</a> <font color="Maroon" title="c2">p</font></span>)</span>,<span class="p1">(<span class="default"><a href="qc_lang1.html#K21" title="QC_LANG1:func.21">the_scope_of</a> <font color="Maroon" title="c2">p</font></span>)</span>,<span class="p1">(<span class="default"><a href="substut1.html#K7" title="SUBSTUT1:func.7">RestrictSub</a> <span class="p2">(<span class="default"><a href="qc_lang1.html#K20" title="QC_LANG1:func.20">bound_in</a> <font color="Maroon" title="c2">p</font></span>)</span>,<font color="Maroon" title="c2">p</font>,<font color="Maroon" title="c3">Sub</font></span>)</span>;<br/><a NAME="E2:30_1_1_1_1_1"/>
<font color="Maroon" title="c2">p</font>,<font color="Maroon" title="c3">Sub</font> <a href="substut1.html#R1" title="SUBSTUT1:pred.1">PQSub</a>  <a href="substut1.html#K14" title="SUBSTUT1:func.14">ExpandSub</a> <span class="p1">(<span class="default"><a href="qc_lang1.html#K20" title="QC_LANG1:func.20">bound_in</a> <font color="Maroon" title="c2">p</font></span>)</span>,<span class="p1">(<span class="default"><a href="qc_lang1.html#K21" title="QC_LANG1:func.21">the_scope_of</a> <font color="Maroon" title="c2">p</font></span>)</span>,<span class="p1">(<span class="default"><a href="substut1.html#K7" title="SUBSTUT1:func.7">RestrictSub</a> <span class="p2">(<span class="default"><a href="qc_lang1.html#K20" title="QC_LANG1:func.20">bound_in</a> <font color="Maroon" title="c2">p</font></span>)</span>,<font color="Maroon" title="c2">p</font>,<font color="Maroon" title="c3">Sub</font></span>)</span>
 <b>by </b><i><a class="txt" href="#E1:30_1_1_1_1_1"><i><font color="Green" title="E22">A5</font></i></a>, <a class="ref" href="substut1.html#D14" title="SUBSTUT1:def.14">SUBSTUT1:def 14</a></i>;<br/><a NAME="E3:30_1_1_1_1_1"/><b>then </b>
<span class="p1"><a href="domain_1.html#K1" title="DOMAIN_1:func.1">[</a><span class="default"><span class="p2"><a href="domain_1.html#K1" title="DOMAIN_1:func.1">[</a><span class="default"><font color="Maroon" title="c2">p</font>,<font color="Maroon" title="c3">Sub</font></span><a href="domain_1.html#K1" title="DOMAIN_1:func.1">]</a></span>,<span class="p2">(<span class="default"><a href="substut1.html#K14" title="SUBSTUT1:func.14">ExpandSub</a> <span class="p3">(<span class="default"><a href="qc_lang1.html#K20" title="QC_LANG1:func.20">bound_in</a> <font color="Maroon" title="c2">p</font></span>)</span>,<span class="p3">(<span class="default"><a href="qc_lang1.html#K21" title="QC_LANG1:func.21">the_scope_of</a> <font color="Maroon" title="c2">p</font></span>)</span>,<span class="p3">(<span class="default"><a href="substut1.html#K7" title="SUBSTUT1:func.7">RestrictSub</a> <span class="p4">(<span class="default"><a href="qc_lang1.html#K20" title="QC_LANG1:func.20">bound_in</a> <font color="Maroon" title="c2">p</font></span>)</span>,<font color="Maroon" title="c2">p</font>,<font color="Maroon" title="c3">Sub</font></span>)</span></span>)</span></span><a href="domain_1.html#K1" title="DOMAIN_1:func.1">]</a></span> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="substut1.html#K15" title="SUBSTUT1:func.15">QSub</a> 
 <b>by </b><i><a class="ref" href="substut1.html#D15" title="SUBSTUT1:def.15">SUBSTUT1:def 15</a></i>;<br/><b>hence </b><a NAME="E4:30_1_1_1_1_1"/>
<font color="Maroon" title="c1">a</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="relat_1.html#NK2" title="RELAT_1:NK.2">dom</a> <a href="substut1.html#K15" title="SUBSTUT1:func.15">QSub</a> 
 <b>by </b><i><a class="txt" href="#E3:30_1_1_1_1"><i><font color="Green" title="E20">A3</font></i></a>, <a class="ref" href="funct_1.html#T8" title="FUNCT_1:th.8">FUNCT_1:8</a></i>; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> verum</span><br/></div><b>end;</b></div><div><a class="txt" onclick="hs2(this)" href="javascript:()" title="30_1_1_1_1_2"><b>now </b></a><div class="add"><b>assume </b><a NAME="E1:30_1_1_1_1_2"/><i><font color="Green" title="E22">A6</font></i>: 
not <font color="Maroon" title="c2">p</font> is <a href="qc_lang1.html#V5" title="QC_LANG1:attr.5">universal</a>
 ; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> <font color="Maroon" title="c1">a</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="relat_1.html#NK2" title="RELAT_1:NK.2">dom</a> <a href="substut1.html#K15" title="SUBSTUT1:func.15">QSub</a> </span><br/><b>set </b><font color="Maroon" title="c4">b</font> =  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> ;<br/><a NAME="E2:30_1_1_1_1_2"/>
<font color="Maroon" title="c2">p</font>,<font color="Maroon" title="c3">Sub</font> <a href="substut1.html#R1" title="SUBSTUT1:pred.1">PQSub</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> 
 <b>by </b><i><a class="txt" href="#E1:30_1_1_1_1_2"><i><font color="Green" title="E22">A6</font></i></a>, <a class="ref" href="substut1.html#D14" title="SUBSTUT1:def.14">SUBSTUT1:def 14</a></i>;<br/><a NAME="E3:30_1_1_1_1_2"/><b>then </b>
<span class="p1"><a href="tarski.html#K4" title="TARSKI:func.4">[</a><span class="default"><span class="p2"><a href="domain_1.html#K1" title="DOMAIN_1:func.1">[</a><span class="default"><font color="Maroon" title="c2">p</font>,<font color="Maroon" title="c3">Sub</font></span><a href="domain_1.html#K1" title="DOMAIN_1:func.1">]</a></span>,<a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> </span><a href="tarski.html#K4" title="TARSKI:func.4">]</a></span> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="substut1.html#K15" title="SUBSTUT1:func.15">QSub</a> 
 <b>by </b><i><a class="ref" href="substut1.html#D15" title="SUBSTUT1:def.15">SUBSTUT1:def 15</a></i>;<br/><b>hence </b><a NAME="E4:30_1_1_1_1_2"/>
<font color="Maroon" title="c1">a</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="relat_1.html#NK2" title="RELAT_1:NK.2">dom</a> <a href="substut1.html#K15" title="SUBSTUT1:func.15">QSub</a> 
 <b>by </b><i><a class="txt" href="#E3:30_1_1_1_1"><i><font color="Green" title="E20">A3</font></i></a>, <a class="ref" href="funct_1.html#T8" title="FUNCT_1:th.8">FUNCT_1:8</a></i>; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> verum</span><br/></div><b>end;</b></div><b>hence </b><a NAME="E6:30_1_1_1_1"/>
<font color="Maroon" title="c1">a</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="relat_1.html#NK2" title="RELAT_1:NK.2">dom</a> <a href="substut1.html#K15" title="SUBSTUT1:func.15">QSub</a> 
 <b>by </b><i><a class="txt" href="#E4:30_1_1_1_1"><i><font color="Green" title="E21">A4</font></i></a></i>; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> verum</span><br/></div><b>end;</b></div>
<a NAME="E2:30_1_1_1"/><b>then </b>
 <a href="substut1.html#K38" title="SUBSTUT1:func.38">CQC-Sub-WFF</a>  <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a>  <a href="relat_1.html#NK2" title="RELAT_1:NK.2">dom</a> <a href="substut1.html#K15" title="SUBSTUT1:func.15">QSub</a> 
 
<b>by </b><i><a class="ref" href="tarski.html#D3" title="TARSKI:def.3">TARSKI:def 3</a></i>;<br/>
<b>hence </b><a NAME="E3:30_1_1_1"/>
 <a href="relat_1.html#NK2" title="RELAT_1:NK.2">dom</a> <span class="p1">(<span class="default"><a href="substut1.html#K15" title="SUBSTUT1:func.15">QSub</a>  <a href="relat_1.html#K7" title="RELAT_1:func.7">|</a> <a href="substut1.html#K38" title="SUBSTUT1:func.38">CQC-Sub-WFF</a> </span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="substut1.html#K38" title="SUBSTUT1:func.38">CQC-Sub-WFF</a> 
 <b>by </b><i><a class="ref" href="relat_1.html#T91" title="RELAT_1:th.91">RELAT_1:91</a></i>; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> verum</span><br/>


</div><b>end;</b></div>
<a NAME="E2:30_1_1"/>
 <a href="relat_1.html#NK4" title="RELAT_1:NK.4">rng</a> <span class="p1">(<span class="default"><a href="substut1.html#K15" title="SUBSTUT1:func.15">QSub</a>  <a href="relat_1.html#K7" title="RELAT_1:func.7">|</a> <a href="substut1.html#K38" title="SUBSTUT1:func.38">CQC-Sub-WFF</a> </span>)</span> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a>  <a href="substut1.html#K1" title="SUBSTUT1:func.1">vSUB</a> 
 
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="30_1_1_2"><b>proof </b></a><div class="add">

<b>let </b><font color="Maroon" title="c1">b</font> be    <a href="hidden.html#M1" title="HIDDEN:mode.1">set</a> ; <i><font color="Red">:: according to </font></i><a class="ref" href="tarski.html#D3" title="TARSKI:def.3">TARSKI:def 3</a> <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> (  not <font color="Maroon" title="c1">b</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="relat_1.html#NK4" title="RELAT_1:NK.4">rng</a> <span class="p1">(<span class="default"><a href="substut1.html#K15" title="SUBSTUT1:func.15">QSub</a>  <a href="relat_1.html#K7" title="RELAT_1:func.7">|</a> <a href="substut1.html#K38" title="SUBSTUT1:func.38">CQC-Sub-WFF</a> </span>)</span> or <font color="Maroon" title="c1">b</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="substut1.html#K1" title="SUBSTUT1:func.1">vSUB</a>  )</span><br/>

<b>assume </b><a NAME="E1:30_1_1_2"/><i><font color="Green" title="E19">A7</font></i>: 
<font color="Maroon" title="c1">b</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="relat_1.html#NK4" title="RELAT_1:NK.4">rng</a> <span class="p1">(<span class="default"><a href="substut1.html#K15" title="SUBSTUT1:func.15">QSub</a>  <a href="relat_1.html#K7" title="RELAT_1:func.7">|</a> <a href="substut1.html#K38" title="SUBSTUT1:func.38">CQC-Sub-WFF</a> </span>)</span>
 ; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> <font color="Maroon" title="c1">b</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="substut1.html#K1" title="SUBSTUT1:func.1">vSUB</a> </span><br/>

<b>consider </b><font color="Maroon" title="c2">a</font> being    <a href="hidden.html#M1" title="HIDDEN:mode.1">set</a> <b> such that </b><br/><a NAME="E3:30_1_1_2"/><i><font color="Green" title="E20">A8</font></i>: 
( <font color="Maroon" title="c2">a</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="relat_1.html#NK2" title="RELAT_1:NK.2">dom</a> <span class="p1">(<span class="default"><a href="substut1.html#K15" title="SUBSTUT1:func.15">QSub</a>  <a href="relat_1.html#K7" title="RELAT_1:func.7">|</a> <a href="substut1.html#K38" title="SUBSTUT1:func.38">CQC-Sub-WFF</a> </span>)</span> &amp; <span class="p1">(<span class="default"><a href="substut1.html#K15" title="SUBSTUT1:func.15">QSub</a>  <a href="relat_1.html#K7" title="RELAT_1:func.7">|</a> <a href="substut1.html#K38" title="SUBSTUT1:func.38">CQC-Sub-WFF</a> </span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <font color="Maroon" title="c2">a</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c1">b</font> )
 <b>by </b><i><a class="txt" href="#E1:30_1_1_2"><i><font color="Green" title="E19">A7</font></i></a>, <a class="ref" href="funct_1.html#D5" title="FUNCT_1:def.5">FUNCT_1:def 5</a></i>;<br/>
<a NAME="E4:30_1_1_2"/><i><font color="Green" title="E21">A9</font></i>: 
<span class="p1"><a href="tarski.html#K4" title="TARSKI:func.4">[</a><span class="default"><font color="Maroon" title="c2">a</font>,<font color="Maroon" title="c1">b</font></span><a href="tarski.html#K4" title="TARSKI:func.4">]</a></span> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <a href="substut1.html#K15" title="SUBSTUT1:func.15">QSub</a>  <a href="relat_1.html#K7" title="RELAT_1:func.7">|</a> <a href="substut1.html#K38" title="SUBSTUT1:func.38">CQC-Sub-WFF</a> 
 
<b>by </b><i><a class="txt" href="#E3:30_1_1_2"><i><font color="Green" title="E20">A8</font></i></a>, <a class="ref" href="funct_1.html#T8" title="FUNCT_1:th.8">FUNCT_1:8</a></i>;<br/>
<a NAME="E5:30_1_1_2"/>
<a href="substut1.html#K15" title="SUBSTUT1:func.15">QSub</a>  <a href="relat_1.html#K7" title="RELAT_1:func.7">|</a> <a href="substut1.html#K38" title="SUBSTUT1:func.38">CQC-Sub-WFF</a>  <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a>  <a href="substut1.html#K15" title="SUBSTUT1:func.15">QSub</a> 
 
<b>by </b><i><a class="ref" href="relat_1.html#T88" title="RELAT_1:th.88">RELAT_1:88</a></i>;<br/>
<b>then consider </b><font color="Maroon" title="c3">p</font> being    <a href="subset_1.html#M1" title="SUBSET_1:mode.1">Element</a> of  <a href="qc_lang1.html#K8" title="QC_LANG1:func.8">QC-WFF</a> , <font color="Maroon" title="c4">Sub</font> being   <a href="substut1.html#NM1" title="SUBSTUT1:NM.1">CQC_Substitution</a>, <font color="Maroon" title="c5">b1</font> being    <a href="hidden.html#M1" title="HIDDEN:mode.1">set</a> <b> such that </b><br/><a NAME="E7:30_1_1_2"/><i><font color="Green" title="E22">A10</font></i>: 
( <span class="p1"><a href="tarski.html#K4" title="TARSKI:func.4">[</a><span class="default"><font color="Maroon" title="c2">a</font>,<font color="Maroon" title="c1">b</font></span><a href="tarski.html#K4" title="TARSKI:func.4">]</a></span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="tarski.html#K4" title="TARSKI:func.4">[</a><span class="default"><span class="p2"><a href="domain_1.html#K1" title="DOMAIN_1:func.1">[</a><span class="default"><font color="Maroon" title="c3">p</font>,<font color="Maroon" title="c4">Sub</font></span><a href="domain_1.html#K1" title="DOMAIN_1:func.1">]</a></span>,<font color="Maroon" title="c5">b1</font></span><a href="tarski.html#K4" title="TARSKI:func.4">]</a></span> &amp; <font color="Maroon" title="c3">p</font>,<font color="Maroon" title="c4">Sub</font> <a href="substut1.html#R1" title="SUBSTUT1:pred.1">PQSub</a> <font color="Maroon" title="c5">b1</font> )
 <b>by </b><i><a class="txt" href="#E4:30_1_1_2"><i><font color="Green" title="E21">A9</font></i></a>, <a class="ref" href="substut1.html#D15" title="SUBSTUT1:def.15">SUBSTUT1:def 15</a></i>;<br/>
<div><i><font color="Green" title="E23">A11</font></i>: <a class="txt" onclick="hs2(this)" href="javascript:()" title="30_1_1_2_1"><b>now </b></a><div class="add"><b>assume </b><a NAME="E1:30_1_1_2_1"/>
<font color="Maroon" title="c3">p</font> is <a href="qc_lang1.html#V5" title="QC_LANG1:attr.5">universal</a>
 ; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> <font color="Maroon" title="c1">b</font> is   <a href="substut1.html#NM1" title="SUBSTUT1:NM.1">CQC_Substitution</a></span><br/><a NAME="E2:30_1_1_2_1"/><b>then </b>
<font color="Maroon" title="c5">b1</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="substut1.html#K14" title="SUBSTUT1:func.14">ExpandSub</a> <span class="p1">(<span class="default"><a href="qc_lang1.html#K20" title="QC_LANG1:func.20">bound_in</a> <font color="Maroon" title="c3">p</font></span>)</span>,<span class="p1">(<span class="default"><a href="qc_lang1.html#K21" title="QC_LANG1:func.21">the_scope_of</a> <font color="Maroon" title="c3">p</font></span>)</span>,<span class="p1">(<span class="default"><a href="substut1.html#K7" title="SUBSTUT1:func.7">RestrictSub</a> <span class="p2">(<span class="default"><a href="qc_lang1.html#K20" title="QC_LANG1:func.20">bound_in</a> <font color="Maroon" title="c3">p</font></span>)</span>,<font color="Maroon" title="c3">p</font>,<font color="Maroon" title="c4">Sub</font></span>)</span>
 <b>by </b><i><a class="txt" href="#E7:30_1_1_2"><i><font color="Green" title="E22">A10</font></i></a>, <a class="ref" href="substut1.html#D14" title="SUBSTUT1:def.14">SUBSTUT1:def 14</a></i>;<br/><b>hence </b><a NAME="E3:30_1_1_2_1"/>
<font color="Maroon" title="c1">b</font> is   <a href="substut1.html#NM1" title="SUBSTUT1:NM.1">CQC_Substitution</a>
 <b>by </b><i><a class="txt" href="#E7:30_1_1_2"><i><font color="Green" title="E22">A10</font></i></a>, <a class="ref" href="zfmisc_1.html#T33" title="ZFMISC_1:th.33">ZFMISC_1:33</a></i>; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> verum</span><br/></div><b>end;</b></div>
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="30_1_1_2_2"><b>now </b></a><div class="add"><b>assume </b><a NAME="E1:30_1_1_2_2"/>
not <font color="Maroon" title="c3">p</font> is <a href="qc_lang1.html#V5" title="QC_LANG1:attr.5">universal</a>
 ; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> <font color="Maroon" title="c1">b</font> is   <a href="substut1.html#NM1" title="SUBSTUT1:NM.1">CQC_Substitution</a></span><br/><a NAME="E2:30_1_1_2_2"/><b>then </b>
<font color="Maroon" title="c5">b1</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> 
 <b>by </b><i><a class="txt" href="#E7:30_1_1_2"><i><font color="Green" title="E22">A10</font></i></a>, <a class="ref" href="substut1.html#D14" title="SUBSTUT1:def.14">SUBSTUT1:def 14</a></i>;<br/><a NAME="E3:30_1_1_2_2"/><b>then </b>
<font color="Maroon" title="c5">b1</font> is   <a href="partfun1.html#NM1" title="PARTFUN1:NM.1">PartFunc</a> of  <a href="qc_lang1.html#K2" title="QC_LANG1:func.2">bound_QC-variables</a> , <a href="qc_lang1.html#K2" title="QC_LANG1:func.2">bound_QC-variables</a> 
 <b>by </b><i><a class="ref" href="relset_1.html#T25" title="RELSET_1:th.25">RELSET_1:25</a></i>;<br/><a NAME="E4:30_1_1_2_2"/><b>then </b>
<font color="Maroon" title="c5">b1</font> is   <a href="substut1.html#NM1" title="SUBSTUT1:NM.1">CQC_Substitution</a>
 <b>by </b><i><a class="ref" href="partfun1.html#T119" title="PARTFUN1:th.119">PARTFUN1:119</a>, <a class="ref" href="substut1.html#D1" title="SUBSTUT1:def.1">SUBSTUT1:def 1</a></i>;<br/><b>hence </b><a NAME="E5:30_1_1_2_2"/>
<font color="Maroon" title="c1">b</font> is   <a href="substut1.html#NM1" title="SUBSTUT1:NM.1">CQC_Substitution</a>
 <b>by </b><i><a class="txt" href="#E7:30_1_1_2"><i><font color="Green" title="E22">A10</font></i></a>, <a class="ref" href="zfmisc_1.html#T33" title="ZFMISC_1:th.33">ZFMISC_1:33</a></i>; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> verum</span><br/></div><b>end;</b></div>
<b>hence </b><a NAME="E10:30_1_1_2"/>
<font color="Maroon" title="c1">b</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="substut1.html#K1" title="SUBSTUT1:func.1">vSUB</a> 
 <b>by </b><i><a class="txt" href="#E8:30_1_1_2"><i><font color="Green" title="E23">A11</font></i></a></i>; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> verum</span><br/>


</div><b>end;</b></div>
<b>hence </b><a NAME="E3:30_1_1"/>
<a href="substut1.html#K15" title="SUBSTUT1:func.15">QSub</a>  <a href="relat_1.html#K7" title="RELAT_1:func.7">|</a> <a href="substut1.html#K38" title="SUBSTUT1:func.38">CQC-Sub-WFF</a>  is   <a href="funct_2.html#NM1" title="FUNCT_2:NM.1">Function</a> of  <a href="substut1.html#K38" title="SUBSTUT1:func.38">CQC-Sub-WFF</a> , <a href="substut1.html#K1" title="SUBSTUT1:func.1">vSUB</a> 
 <b>by </b><i><a class="txt" href="#E1:30_1_1"><i><font color="Green" title="E18">A1</font></i></a>, <a class="ref" href="funct_2.html#T4" title="FUNCT_2:th.4">FUNCT_2:4</a></i>; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> verum</span><br/>


</div>
