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<b>let </b><font color="Maroon">c<sub>4</sub></font> be    <a href="ami_1.html#M1">FinPartState</a> of <font color="Maroon">c<sub>3</sub></font>;<br/>

<b>assume </b><a NAME="E1:90_1_1"/><i><font color="Green">E48</font></i>: 
<font color="Maroon">c<sub>4</sub></font> is <a href="amistd_1.html#V7" target="_self">really-closed</a>
 ;<br/>

<b>assume </b><a NAME="E2:90_1_1"/>
( <font color="Maroon">c<sub>4</sub></font> is <a href="amistd_1.html#V9" target="_self">lower</a> &amp; not <font color="Maroon">c<sub>4</sub></font> is <a href="xboole_0.html#V1">empty</a> &amp; <font color="Maroon">c<sub>4</sub></font> is <a href="ami_3.html#V1">programmed</a> )
 ;<br/>

<a NAME="E3:90_1_1"/><b>then </b>
 <a href="amistd_1.html#K5" target="_self">il.</a> <font color="Maroon">c<sub>3</sub></font>,0 <a href="hidden.html#R2">in</a>  <a href="relat_1.html#K1">dom</a> <font color="Maroon">c<sub>4</sub></font>
 
<b>by </b><i><a class="ref" href="amistd_1.html#T49" target="_self">Th49</a></i>;<br/>
<b>hence </b><a NAME="E4:90_1_1"/>
<font color="Maroon">c<sub>4</sub></font> is <a href="amistd_1.html#V8" target="_self">para-closed</a>
 <b>by </b><i><a class="txt" href="amistd_1.html#E1:90_1_1"><i><font color="Green">E48</font></i></a>, <a class="ref" href="amistd_1.html#T44" target="_self">Th44</a></i>;<br/>


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