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<b>take </b>
 <a href="sgraph1.html#G1" target="_self">SimpleGraphStruct</a>(# <a href="xboole_0.html#K1">{}</a> ,<span class="p1">(<span class="default"><a href="subset_1.html#K1">{}</a> <span class="p2">(<span class="default"><a href="sgraph1.html#K2" target="_self">TWOELEMENTSETS</a> <a href="xboole_0.html#K1">{}</a> </span>)</span></span>)</span> #)
;<br/>

<b>thus </b><a NAME="E1:25_1_1"/>
 <a href="sgraph1.html#G1" target="_self">SimpleGraphStruct</a>(# <a href="xboole_0.html#K1">{}</a> ,<span class="p1">(<span class="default"><a href="subset_1.html#K1">{}</a> <span class="p2">(<span class="default"><a href="sgraph1.html#K2" target="_self">TWOELEMENTSETS</a> <a href="xboole_0.html#K1">{}</a> </span>)</span></span>)</span> #) is    <a href="subset_1.html#M1">Element</a> of  <a href="sgraph1.html#K3" target="_self">SIMPLEGRAPHS</a> <font color="Maroon">c<sub>1</sub></font>
 <b>by </b><i><a class="ref" href="sgraph1.html#T19" target="_self">Th19</a></i>;<br/>


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