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<b>let </b><font color="Maroon">tm1</font> be    <a href="turing_1.html#L1" target="_self">TuringStr</a> , <font color="Maroon">tm2</font> be    <a href="turing_1.html#L1" target="_self">TuringStr</a> ;<br/><b>let </b><font color="Maroon">t</font> be   <a href="turing_1.html#NM2">Tape</a> of <span class="p1">(<span class="default"><font color="Maroon">tm1</font> <a href="turing_1.html#K32" target="_self">';'</a> <font color="Maroon">tm2</font></span>)</span>;<br/>



<b>set </b><font color="Maroon">S1</font> = the <a href="turing_1.html#U1" target="_self">Symbols</a> of <font color="Maroon">tm1</font>;<br/>
<b>set </b><font color="Maroon">S2</font> = the <a href="turing_1.html#U1" target="_self">Symbols</a> of <font color="Maroon">tm2</font>;<br/>
<b>assume </b><a NAME="E1:99"/><i><font color="Green">E30</font></i>: 
the <a href="turing_1.html#U1" target="_self">Symbols</a> of <font color="Maroon">tm1</font> <a href="hidden.html#R1">=</a> the <a href="turing_1.html#U1" target="_self">Symbols</a> of <font color="Maroon">tm2</font>
 ;<br/>

the <a href="turing_1.html#U1" target="_self">Symbols</a> of <span class="p1">(<span class="default"><font color="Maroon">tm1</font> <a href="turing_1.html#K32" target="_self">';'</a> <font color="Maroon">tm2</font></span>)</span> = 
the <a href="turing_1.html#U1" target="_self">Symbols</a> of <font color="Maroon">tm1</font> <a href="xboole_0.html#K2">\/</a> the <a href="turing_1.html#U1" target="_self">Symbols</a> of <font color="Maroon">tm2</font>
<b>by </b><i/>
<br/>.= 
the <a href="turing_1.html#U1" target="_self">Symbols</a> of <font color="Maroon">tm1</font>
<b>by </b><i><a class="ref" href="turing_1.html#T13" target="_self">Th13</a></i>
;<br/>
<b>hence </b><a NAME="E3:99"/>
( <font color="Maroon">t</font> is   <a href="turing_1.html#NM2">Tape</a> of <font color="Maroon">tm1</font> &amp; <font color="Maroon">t</font> is   <a href="turing_1.html#NM2">Tape</a> of <font color="Maroon">tm2</font> )
 <b>by </b><i><a class="ref" href="turing_1.html#T13" target="_self">Th13</a></i>;<br/>


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