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

<b>let </b><font color="Maroon" title="c1">ap</font>, <font color="Maroon" title="c2">bm</font>, <font color="Maroon" title="c3">cp</font> be  non <a href="facirc_1.html#V1" title="FACIRC_1:attr.1">pair</a>  <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"> for <font color="Olive" title="b1">x</font>, <font color="Olive" title="b2">y</font>, <font color="Olive" title="b3">z</font> being   <a href="hidden.html#M1" title="HIDDEN:mode.1">set</a>  holds   <a href="msafree2.html#K2" title="MSAFREE2:func.2">InputVertices</a> <span class="p1">(<span class="default"><a href="gfacirc1.html#K25" title="GFACIRC1:func.25">BitGFA1Str</a> <font color="Maroon" title="c1">ap</font>,<font color="Maroon" title="c2">bm</font>,<font color="Maroon" title="c3">cp</font></span>)</span> <a href="xboole_0.html#R1" title="XBOOLE_0:pred.1">misses</a>  <a href="msafree2.html#K4" title="MSAFREE2:func.4">InnerVertices</a> <span class="p1">(<span class="default"><a href="gfacirc1.html#K37" title="GFACIRC1:func.37">BitGFA2Str</a> <font color="Olive" title="b1">x</font>,<font color="Olive" title="b2">y</font>,<font color="Olive" title="b3">z</font></span>)</span></span><br/><b>let </b><font color="Maroon" title="c4">x</font>, <font color="Maroon" title="c5">y</font>, <font color="Maroon" title="c6">z</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">  <a href="msafree2.html#K2" title="MSAFREE2:func.2">InputVertices</a> <span class="p1">(<span class="default"><a href="gfacirc1.html#K25" title="GFACIRC1:func.25">BitGFA1Str</a> <font color="Maroon" title="c1">ap</font>,<font color="Maroon" title="c2">bm</font>,<font color="Maroon" title="c3">cp</font></span>)</span> <a href="xboole_0.html#R1" title="XBOOLE_0:pred.1">misses</a>  <a href="msafree2.html#K4" title="MSAFREE2:func.4">InnerVertices</a> <span class="p1">(<span class="default"><a href="gfacirc1.html#K37" title="GFACIRC1:func.37">BitGFA2Str</a> <font color="Maroon" title="c4">x</font>,<font color="Maroon" title="c5">y</font>,<font color="Maroon" title="c6">z</font></span>)</span></span><br/>



<b>set </b><font color="Maroon" title="c7">S1</font> =  <a href="gfacirc1.html#K25" title="GFACIRC1:func.25">BitGFA1Str</a> <font color="Maroon" title="c1">ap</font>,<font color="Maroon" title="c2">bm</font>,<font color="Maroon" title="c3">cp</font>;<br/>
<b>set </b><font color="Maroon" title="c8">S2</font> =  <a href="gfacirc1.html#K37" title="GFACIRC1:func.37">BitGFA2Str</a> <font color="Maroon" title="c4">x</font>,<font color="Maroon" title="c5">y</font>,<font color="Maroon" title="c6">z</font>;<br/>
<a NAME="E1:28"/>
( not  <a href="msafree2.html#K2" title="MSAFREE2:func.2">InputVertices</a> <span class="p1">(<span class="default"><a href="gfacirc1.html#K25" title="GFACIRC1:func.25">BitGFA1Str</a> <font color="Maroon" title="c1">ap</font>,<font color="Maroon" title="c2">bm</font>,<font color="Maroon" title="c3">cp</font></span>)</span> is <a href="facirc_1.html#V2" title="FACIRC_1:attr.2">with_pair</a> &amp;  <a href="msafree2.html#K4" title="MSAFREE2:func.4">InnerVertices</a> <span class="p1">(<span class="default"><a href="gfacirc1.html#K37" title="GFACIRC1:func.37">BitGFA2Str</a> <font color="Maroon" title="c4">x</font>,<font color="Maroon" title="c5">y</font>,<font color="Maroon" title="c6">z</font></span>)</span> is   <a href="relat_1.html#NM1" title="RELAT_1:NM.1">Relation</a> )
 
<b>by </b><i><a class="ref" href="gfacirc1.html#T80" title="GFACIRC1:th.80">GFACIRC1:80</a>, <a class="ref" href="gfacirc1.html#T114" title="GFACIRC1:th.114">GFACIRC1:114</a></i>;<br/>
<b>hence </b><a NAME="E2:28"/>
 <a href="msafree2.html#K2" title="MSAFREE2:func.2">InputVertices</a> <span class="p1">(<span class="default"><a href="gfacirc1.html#K25" title="GFACIRC1:func.25">BitGFA1Str</a> <font color="Maroon" title="c1">ap</font>,<font color="Maroon" title="c2">bm</font>,<font color="Maroon" title="c3">cp</font></span>)</span> <a href="xboole_0.html#R1" title="XBOOLE_0:pred.1">misses</a>  <a href="msafree2.html#K4" title="MSAFREE2:func.4">InnerVertices</a> <span class="p1">(<span class="default"><a href="gfacirc1.html#K37" title="GFACIRC1:func.37">BitGFA2Str</a> <font color="Maroon" title="c4">x</font>,<font color="Maroon" title="c5">y</font>,<font color="Maroon" title="c6">z</font></span>)</span>
 <b>by </b><i><a class="ref" href="facirc_1.html#T5" title="FACIRC_1:th.5">FACIRC_1:5</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>
