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<b>reconsider </b><font color="Maroon" title="c2">F</font> = <span class="p1"><a href="domain_1.html#K6" title="DOMAIN_1:func.6">{</a><span class="default"><span class="p2">(<span class="default"><a href="struct_0.html#K1" title="STRUCT_0:func.1">{}</a> <font color="Maroon" title="c1">V</font></span>)</span></span><a href="domain_1.html#K6" title="DOMAIN_1:func.6">}</a></span> as   <a href="struct_0.html#NM3" title="STRUCT_0:NM.3">Subset-Family</a> of <font color="Maroon" title="c1">V</font> ;<br/>
<b>take </b>
<font color="Maroon" title="c2">F</font>
;<br/>

<b>thus </b><a NAME="E2:53_1_1"/>
not <font color="Maroon" title="c2">F</font> is <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>
 ;<br/>

<b>let </b><font color="Maroon" title="c3">M</font> be   <a href="struct_0.html#NM2" title="STRUCT_0:NM.2">Subset</a> of <font color="Maroon" title="c1">V</font>; <i><font color="Red">:: according to </font></i><a class="ref" href="rltopsp1.html#D7" target="_self" title="RLTOPSP1:def.7">RLTOPSP1:def 7</a><br/>

<b>assume </b><a NAME="E3:53_1_1"/>
<font color="Maroon" title="c3">M</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c2">F</font>
 ;<br/>

<b>hence </b><a NAME="E4:53_1_1"/>
<font color="Maroon" title="c3">M</font> is <a href="rltopsp1.html#V3" title="RLTOPSP1:attr.3">circled</a>
 <b>by </b><i><a class="ref" href="tarski.html#D1" title="TARSKI:def.1">TARSKI:def 1</a></i>;<br/>


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