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<b>let </b><font color="Maroon">a</font> be    <a href="hidden.html#M1">set</a> , <font color="Maroon">b</font> be    <a href="hidden.html#M1">set</a> ;<br/>

<a NAME="E1:7"/>
( <span class="p1"><a href="facirc_1.html#K5">&lt;*</a><span class="default"><font color="Maroon">a</font></span><a href="facirc_1.html#K5">*&gt;</a></span> <a href="funct_1.html#K1">.</a> 1 <a href="hidden.html#R1">=</a> <font color="Maroon">a</font> &amp; <span class="p1"><a href="facirc_1.html#K5">&lt;*</a><span class="default"><font color="Maroon">b</font></span><a href="facirc_1.html#K5">*&gt;</a></span> <a href="funct_1.html#K1">.</a> 1 <a href="hidden.html#R1">=</a> <font color="Maroon">b</font> )
 
<b>by </b><i><a class="ref" href="finseq_1.html#T57">FINSEQ_1:57</a></i>;<br/>
<b>hence </b><a NAME="E2:7"/>
for <font color="Olive">c</font> being   <a href="hidden.html#M1">set</a>   st <font color="Olive">c</font> <a href="hidden.html#R1">=</a> <span class="p1"><a href="tarski.html#K4">[</a><span class="default"><a href="facirc_2.html#K3">&lt;*&gt;</a> ,<span class="p2">(<span class="default"><span class="p3">(<span class="default">0 <a href="finseq_2.html#K4">-tuples_on</a> <a href="circcomb.html#K10">BOOLEAN</a> </span>)</span> <a href="circcomb.html#K5">--&gt;</a> <a href="margrel1.html#K8">TRUE</a> </span>)</span></span><a href="tarski.html#K4">]</a></span> holds <br/>( 1 <a href="fscirc_2.html#K1" target="_self">-BitSubtracterStr</a> <span class="p1"><a href="facirc_1.html#K5">&lt;*</a><span class="default"><font color="Maroon">a</font></span><a href="facirc_1.html#K5">*&gt;</a></span>,<span class="p1"><a href="facirc_1.html#K5">&lt;*</a><span class="default"><font color="Maroon">b</font></span><a href="facirc_1.html#K5">*&gt;</a></span> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><a href="circcomb.html#K7">1GateCircStr</a> <a href="facirc_2.html#K3">&lt;*&gt;</a> ,<span class="p2">(<span class="default"><span class="p3">(<span class="default">0 <a href="finseq_2.html#K4">-tuples_on</a> <a href="circcomb.html#K10">BOOLEAN</a> </span>)</span> <a href="circcomb.html#K5">--&gt;</a> <a href="margrel1.html#K8">TRUE</a> </span>)</span></span>)</span> <a href="circcomb.html#K3">+*</a> <span class="p1">(<span class="default"><a href="fscirc_1.html#K8">BitSubtracterWithBorrowStr</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<font color="Olive">c</font></span>)</span> &amp; 1 <a href="fscirc_2.html#K2" target="_self">-BitSubtracterCirc</a> <span class="p1"><a href="facirc_1.html#K5">&lt;*</a><span class="default"><font color="Maroon">a</font></span><a href="facirc_1.html#K5">*&gt;</a></span>,<span class="p1"><a href="facirc_1.html#K5">&lt;*</a><span class="default"><font color="Maroon">b</font></span><a href="facirc_1.html#K5">*&gt;</a></span> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><a href="circcomb.html#K9">1GateCircuit</a> <a href="facirc_2.html#K3">&lt;*&gt;</a> ,<span class="p2">(<span class="default"><span class="p3">(<span class="default">0 <a href="finseq_2.html#K4">-tuples_on</a> <a href="circcomb.html#K10">BOOLEAN</a> </span>)</span> <a href="circcomb.html#K5">--&gt;</a> <a href="margrel1.html#K8">TRUE</a> </span>)</span></span>)</span> <a href="circcomb.html#K4">+*</a> <span class="p1">(<span class="default"><a href="fscirc_1.html#K9">BitSubtracterWithBorrowCirc</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<font color="Olive">c</font></span>)</span> &amp; 1 <a href="fscirc_2.html#K3" target="_self">-BitBorrowOutput</a> <span class="p1"><a href="facirc_1.html#K5">&lt;*</a><span class="default"><font color="Maroon">a</font></span><a href="facirc_1.html#K5">*&gt;</a></span>,<span class="p1"><a href="facirc_1.html#K5">&lt;*</a><span class="default"><font color="Maroon">b</font></span><a href="facirc_1.html#K5">*&gt;</a></span> <a href="hidden.html#R1">=</a>  <a href="fscirc_1.html#K6">BorrowOutput</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<font color="Olive">c</font> )
 <b>by </b><i/>;<br/>


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