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<b>consider </b><font color="Maroon">z</font> being  non <a href="xboole_0.html#V1">empty</a>  <a href="hidden.html#M1">set</a> ;<br/>
<b>consider </b><font color="Maroon">z1</font> being    <a href="subset_1.html#M1">Element</a> of <font color="Maroon">z</font>;<br/>
<b>take </b>
 <a href="osalg_1.html#K8" target="_self">TrivialOSA</a> <font color="Maroon">S</font>,<font color="Maroon">z</font>,<font color="Maroon">z1</font>
;<br/>

<b>thus </b><a NAME="E3:80_1_1"/>
(  <a href="osalg_1.html#K8" target="_self">TrivialOSA</a> <font color="Maroon">S</font>,<font color="Maroon">z</font>,<font color="Maroon">z1</font> is <a href="osalg_1.html#V13" target="_self">monotone</a> &amp;  <a href="osalg_1.html#K8" target="_self">TrivialOSA</a> <font color="Maroon">S</font>,<font color="Maroon">z</font>,<font color="Maroon">z1</font> is <a href="msualg_1.html#V4">strict</a> &amp;  <a href="osalg_1.html#K8" target="_self">TrivialOSA</a> <font color="Maroon">S</font>,<font color="Maroon">z</font>,<font color="Maroon">z1</font> is <a href="msualg_1.html#V5">non-empty</a> )
 <b>by </b><i><a class="ref" href="osalg_1.html#D5" target="_self">Def5</a></i>;<br/>


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