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<b>let </b><font color="Maroon">H</font> be   <a href="modelc_1.html#NM1">CTL-formula</a>;<br/>

<b>assume </b><a NAME="E1:22"/>
<font color="Maroon">H</font> is <a href="modelc_1.html#V3" target="_self">negative</a>
 ;<br/>

<b>then consider </b><font color="Maroon">H1</font> being   <a href="modelc_1.html#NM1">CTL-formula</a><b> such that </b><br/><a NAME="E3:22"/><i><font color="Green">E27</font></i>: 
<font color="Maroon">H</font> <a href="hidden.html#R1">=</a>  <a href="modelc_1.html#K8" target="_self">'not'</a> <font color="Maroon">H1</font>
 <b>by </b><i/>;<br/>
<b>thus </b><a NAME="E4:22"/>
<font color="Maroon">H</font> <a href="funct_1.html#K1">.</a> 1 <a href="hidden.html#R1">=</a> 0
 <b>by </b><i>, <a class="ref" href="finseq_1.html#T58">FINSEQ_1:58</a></i>;<br/>


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