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<b>let </b><font color="Maroon">D2</font> be  non <a href="xboole_0.html#V1">empty</a> <a href="compts_1.html#V6">compact</a> non <a href="sppol_1.html#V1">horizontal</a> <a href="struct_0.html#NM2">Subset</a> of <span class="p1">(<span class="default"><a href="euclid.html#K15">TOP-REAL</a> 2</span>)</span>;<br/>

<a NAME="E1:42"/>
(  <a href="pscomp_1.html#K18">S-bound</a> <font color="Maroon">D2</font> <a href="xxreal_0.html#R1">&lt;=</a>  <a href="pscomp_1.html#K16">N-bound</a> <font color="Maroon">D2</font> &amp;  <a href="pscomp_1.html#K18">S-bound</a> <font color="Maroon">D2</font> <a href="hidden.html#NR2" target="_self">&lt;&gt;</a>  <a href="pscomp_1.html#K16">N-bound</a> <font color="Maroon">D2</font> )
 
<b>by </b><i>, </i>;<br/>
<b>hence </b><a NAME="E2:42"/>
 <a href="pscomp_1.html#K18">S-bound</a> <font color="Maroon">D2</font> <a href="xxreal_0.html#NR3" target="_self">&lt;</a>  <a href="pscomp_1.html#K16">N-bound</a> <font color="Maroon">D2</font>
 <b>by </b><i><a class="ref" href="real_1.html#D5">REAL_1:def 5</a></i>;<br/>


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