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<a NAME="E1:86_1_1"/>
the    <a href="subset_1.html#M1" title="SUBSET_1:mode.1">Element</a> of <font color="Maroon" title="c1">A</font> <a href="xcmplx_0.html#K2" title="XCMPLX_0:func.2">+</a> the    <a href="subset_1.html#M1" title="SUBSET_1:mode.1">Element</a> of <font color="Maroon" title="c2">B</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c1">A</font> <a href="member_1.html#K6" title="MEMBER_1:func.6">++</a> <font color="Maroon" title="c2">B</font>
 
<b>by </b><i><a class="ref" href="member_1.html#T52" target="_self" title="MEMBER_1:th.52">Th52</a></i>;<br/>
<b>hence </b><a NAME="E2:86_1_1"/>
not <font color="Maroon" title="c1">A</font> <a href="member_1.html#K6" title="MEMBER_1:func.6">++</a> <font color="Maroon" title="c2">B</font> is <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>
 ; <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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