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<b>let </b><font color="Maroon" title="c1">A</font>, <font color="Maroon" title="c2">B</font> be  <a href="membered.html#V1" title="MEMBERED:attr.1">complex-membered</a>  <a href="hidden.html#M1" title="HIDDEN:mode.1">set</a> ; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> ( <font color="Maroon" title="c1">A</font> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a> <font color="Maroon" title="c2">B</font> iff <font color="Maroon" title="c1">A</font> <a href="member_1.html#K4" title="MEMBER_1:func.4">""</a>  <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a> <font color="Maroon" title="c2">B</font> <a href="member_1.html#K4" title="MEMBER_1:func.4">""</a>  )</span><br/>



<a NAME="E1:63"/>
( <span class="p1">(<span class="default"><font color="Maroon" title="c1">A</font> <a href="member_1.html#K4" title="MEMBER_1:func.4">""</a> </span>)</span> <a href="member_1.html#K4" title="MEMBER_1:func.4">""</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c1">A</font> &amp; <span class="p1">(<span class="default"><font color="Maroon" title="c2">B</font> <a href="member_1.html#K4" title="MEMBER_1:func.4">""</a> </span>)</span> <a href="member_1.html#K4" title="MEMBER_1:func.4">""</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c2">B</font> )
 
;<br/>
<b>hence </b><a NAME="E2:63"/>
( <font color="Maroon" title="c1">A</font> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a> <font color="Maroon" title="c2">B</font> iff <font color="Maroon" title="c1">A</font> <a href="member_1.html#K4" title="MEMBER_1:func.4">""</a>  <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a> <font color="Maroon" title="c2">B</font> <a href="member_1.html#K4" title="MEMBER_1:func.4">""</a>  )
 <b>by </b><i><a class="txt" href="member_1.html#E43"><i><font color="Green" title="E35">Lm4</font></i></a></i>; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> verum</span><br/>


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