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<b>let </b><font color="Maroon">G</font> be   <a href="glib_003.html#NM1">WGraph</a>;<br/>

<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="45_1"><b>now </b></a><div class="add"><b>let </b><font color="Maroon">x</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>assume </b><a NAME="E1:45_1"/>
<font color="Maroon">x</font> <a href="hidden.html#R2">in</a>  <a href="glib_004.html#K8" target="_self">WGraphSelectors</a> 
 ;<br/><a NAME="E2:45_1"/><b>then </b>
( <font color="Maroon">x</font> <a href="hidden.html#R1">=</a>  <a href="glib_000.html#K1">VertexSelector</a>  or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a>  <a href="glib_000.html#K2">EdgeSelector</a>  or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a>  <a href="glib_000.html#K3">SourceSelector</a>  or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a>  <a href="glib_000.html#K4">TargetSelector</a>  or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a>  <a href="glib_003.html#K2">WeightSelector</a>  )
 <b>by </b><i><a class="ref" href="enumset1.html#D3">ENUMSET1:def 3</a></i>;<br/><b>hence </b><a NAME="E3:45_1"/>
<font color="Maroon">x</font> <a href="hidden.html#R2">in</a>  <a href="relat_1.html#K1">dom</a> <font color="Maroon">G</font>
 <b>by </b><i><a class="ref" href="glib_000.html#D11">GLIB_000:def 11</a>, <a class="ref" href="glib_003.html#D4">GLIB_003:def 4</a></i>;<br/></div><b>end;</b></div>
<b>hence </b><a NAME="E2:45"/>
 <a href="glib_004.html#K8" target="_self">WGraphSelectors</a>  <a href="tarski.html#R1">c=</a>  <a href="relat_1.html#K1">dom</a> <font color="Maroon">G</font>
 <b>by </b><i><a class="ref" href="tarski.html#D3">TARSKI:def 3</a></i>;<br/>


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