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<span class="kw">take </span>
 <a href="topreal1.html#K1" title="TOPREAL1:func.1">R^2-unit_square</a> 
; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="Red">::  thesis: </font></span></a><span class="hide"> ( not  <a href="topreal1.html#K1" title="TOPREAL1:func.1">R^2-unit_square</a>  is  <a href="sppol_1.html#V2" title="SPPOL_1:attr.2">vertical</a>  &amp; not  <a href="topreal1.html#K1" title="TOPREAL1:func.1">R^2-unit_square</a>  is  <a href="sppol_1.html#V1" title="SPPOL_1:attr.1">horizontal</a>  &amp; not  <a href="topreal1.html#K1" title="TOPREAL1:func.1">R^2-unit_square</a>  is  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>  &amp;  <a href="topreal1.html#K1" title="TOPREAL1:func.1">R^2-unit_square</a>  is  <a href="compts_1.html#V2" title="COMPTS_1:attr.2">compact</a>  )</span><br/>

<span class="kw">thus </span><a NAME="E1:17_1_1"/>
( not  <a href="topreal1.html#K1" title="TOPREAL1:func.1">R^2-unit_square</a>  is  <a href="sppol_1.html#V2" title="SPPOL_1:attr.2">vertical</a>  &amp; not  <a href="topreal1.html#K1" title="TOPREAL1:func.1">R^2-unit_square</a>  is  <a href="sppol_1.html#V1" title="SPPOL_1:attr.1">horizontal</a>  &amp; not  <a href="topreal1.html#K1" title="TOPREAL1:func.1">R^2-unit_square</a>  is  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>  &amp;  <a href="topreal1.html#K1" title="TOPREAL1:func.1">R^2-unit_square</a>  is  <a href="compts_1.html#V2" title="COMPTS_1:attr.2">compact</a>  )
 <span class="kw">by</span> <span class="lab"><a class="ref" href="sppol_2.html#T63" title="SPPOL_2:th.63">SPPOL_2:63</a></span>; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="Red">::  thesis: </font></span></a><span class="hide"> verum</span><br/>


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