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<b>let </b><font color="Maroon">c<sub>1</sub></font> be    <a href="subset_1.html#M1">Element</a> of  <a href="circcomb.html#K10">BOOLEAN</a> ;<br/>

<b>thus </b><a NAME="E1:5"/>
<a href="gfacirc1.html#K1" target="_self">inv1</a>  <a href="funct_1.html#K1">.</a> <span class="p1"><a href="facirc_1.html#K5">&lt;*</a><span class="default"><font color="Maroon">c<sub>1</sub></font></span><a href="facirc_1.html#K5">*&gt;</a></span> <a href="hidden.html#R1">=</a>  <a href="margrel1.html#K11">'not'</a> <font color="Maroon">c<sub>1</sub></font>
 <b>by </b><i><a class="ref" href="gfacirc1.html#D1" target="_self">Def1</a></i>;<br/>

<b>thus </b><a href="gfacirc1.html#K1" target="_self">inv1</a>  <a href="funct_1.html#K1">.</a> <span class="p1"><a href="facirc_1.html#K5">&lt;*</a><span class="default"><font color="Maroon">c<sub>1</sub></font></span><a href="facirc_1.html#K5">*&gt;</a></span> = 
 <a href="margrel1.html#K11">'not'</a> <font color="Maroon">c<sub>1</sub></font>
<b>by </b><i><a class="ref" href="gfacirc1.html#D1" target="_self">Def1</a></i>
<br/>.= 
 <a href="margrel1.html#K11">'not'</a> <span class="p1">(<span class="default"><font color="Maroon">c<sub>1</sub></font> <a href="margrel1.html#K12">'&amp;'</a> <font color="Maroon">c<sub>1</sub></font></span>)</span>
<b>by </b><i><a class="ref" href="binarith.html#T16">BINARITH:16</a></i>
<br/>.= 
<a href="twoscomp.html#K5">nand2</a>  <a href="funct_1.html#K1">.</a> <span class="p1"><a href="facirc_1.html#K6">&lt;*</a><span class="default"><font color="Maroon">c<sub>1</sub></font>,<font color="Maroon">c<sub>1</sub></font></span><a href="facirc_1.html#K6">*&gt;</a></span>
<b>by </b><i><a class="ref" href="twoscomp.html#D4">TWOSCOMP:def 4</a></i>
;<br/>

<b>thus </b><a href="gfacirc1.html#K1" target="_self">inv1</a>  <a href="funct_1.html#K1">.</a> <span class="p1"><a href="facirc_1.html#K5">&lt;*</a><span class="default">0</span><a href="facirc_1.html#K5">*&gt;</a></span> = 
 <a href="margrel1.html#K11">'not'</a> <a href="margrel1.html#K7">FALSE</a> 
<b>by </b><i><a class="ref" href="gfacirc1.html#D1" target="_self">Def1</a>, <a class="ref" href="margrel1.html#T36">MARGREL1:36</a></i>
<br/>.= 
1
<b>by </b><i><a class="ref" href="margrel1.html#T36">MARGREL1:36</a>, <a class="ref" href="margrel1.html#T41">MARGREL1:41</a></i>
;<br/>

<b>thus </b><a href="gfacirc1.html#K1" target="_self">inv1</a>  <a href="funct_1.html#K1">.</a> <span class="p1"><a href="facirc_1.html#K5">&lt;*</a><span class="default">1</span><a href="facirc_1.html#K5">*&gt;</a></span> = 
 <a href="margrel1.html#K11">'not'</a> <a href="margrel1.html#K8">TRUE</a> 
<b>by </b><i><a class="ref" href="gfacirc1.html#D1" target="_self">Def1</a>, <a class="ref" href="margrel1.html#T36">MARGREL1:36</a></i>
<br/>.= 
0
<b>by </b><i><a class="ref" href="margrel1.html#T36">MARGREL1:36</a>, <a class="ref" href="margrel1.html#T41">MARGREL1:41</a></i>
;<br/>


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