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<b>let </b><font color="Maroon" title="c1">A</font>, <font color="Maroon" title="c2">B</font>, <font color="Maroon" title="c3">C</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="member_1.html#K8" title="MEMBER_1:func.8">--</a> <span class="p1">(<span class="default"><font color="Maroon" title="c2">B</font> <a href="xboole_0.html#K3" title="XBOOLE_0:func.3">/\</a> <font color="Maroon" title="c3">C</font></span>)</span> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a> <span class="p1">(<span class="default"><font color="Maroon" title="c1">A</font> <a href="member_1.html#K8" title="MEMBER_1:func.8">--</a> <font color="Maroon" title="c2">B</font></span>)</span> <a href="xboole_0.html#K3" title="XBOOLE_0:func.3">/\</a> <span class="p1">(<span class="default"><font color="Maroon" title="c1">A</font> <a href="member_1.html#K8" title="MEMBER_1:func.8">--</a> <font color="Maroon" title="c3">C</font></span>)</span></span><br/>





<a NAME="E1:128"/>
<font color="Maroon" title="c1">A</font> <a href="member_1.html#K8" title="MEMBER_1:func.8">--</a> <span class="p1">(<span class="default"><font color="Maroon" title="c2">B</font> <a href="xboole_0.html#K3" title="XBOOLE_0:func.3">/\</a> <font color="Maroon" title="c3">C</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c1">A</font> <a href="member_1.html#K6" title="MEMBER_1:func.6">++</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="member_1.html#K2" title="MEMBER_1:func.2">--</a> <font color="Maroon" title="c2">B</font></span>)</span> <a href="xboole_0.html#K3" title="XBOOLE_0:func.3">/\</a> <span class="p2">(<span class="default"><a href="member_1.html#K2" title="MEMBER_1:func.2">--</a> <font color="Maroon" title="c3">C</font></span>)</span></span>)</span>
 
<b>by </b><i><a class="ref" href="member_1.html#T22" target="_self" title="MEMBER_1:th.22">Th22</a></i>;<br/>
<b>hence </b><a NAME="E2:128"/>
<font color="Maroon" title="c1">A</font> <a href="member_1.html#K8" title="MEMBER_1:func.8">--</a> <span class="p1">(<span class="default"><font color="Maroon" title="c2">B</font> <a href="xboole_0.html#K3" title="XBOOLE_0:func.3">/\</a> <font color="Maroon" title="c3">C</font></span>)</span> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a> <span class="p1">(<span class="default"><font color="Maroon" title="c1">A</font> <a href="member_1.html#K8" title="MEMBER_1:func.8">--</a> <font color="Maroon" title="c2">B</font></span>)</span> <a href="xboole_0.html#K3" title="XBOOLE_0:func.3">/\</a> <span class="p1">(<span class="default"><font color="Maroon" title="c1">A</font> <a href="member_1.html#K8" title="MEMBER_1:func.8">--</a> <font color="Maroon" title="c3">C</font></span>)</span>
 <b>by </b><i><a class="ref" href="member_1.html#T55" target="_self" title="MEMBER_1:th.55">Th55</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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