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<b>let </b><font color="Maroon">c<sub>1</sub></font> be  <a href="margrel1.html#V2" target="_self">boolean</a>  <a href="hidden.html#M1">set</a> ;<br/>

<a NAME="E1:41"/>
<font color="Maroon">c<sub>1</sub></font> <a href="margrel1.html#K10" target="_self">'&amp;'</a> <span class="p1">(<span class="default"><a href="margrel1.html#K9" target="_self">'not'</a> <font color="Maroon">c<sub>1</sub></font></span>)</span> <a href="hidden.html#R1">=</a>  <a href="margrel1.html#K7" target="_self">FALSE</a> 
 
<b>by </b><i><a class="ref" href="margrel1.html#T46" target="_self">Th46</a></i>;<br/>
<b>hence </b><a NAME="E2:41"/>
 <a href="margrel1.html#K9" target="_self">'not'</a> <span class="p1">(<span class="default"><font color="Maroon">c<sub>1</sub></font> <a href="margrel1.html#K10" target="_self">'&amp;'</a> <span class="p2">(<span class="default"><a href="margrel1.html#K9" target="_self">'not'</a> <font color="Maroon">c<sub>1</sub></font></span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="margrel1.html#K8" target="_self">TRUE</a> 
 <b>by </b><i><a class="ref" href="margrel1.html#T41" target="_self">Th41</a></i>;<br/>


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