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<b>thus </b><a NAME="E1:18_1_1"/>
 <a href="realset2.html#K3" title="REALSET2:func.3">dL-Z_2</a>  is <a href="vectsp_1.html#V3" title="VECTSP_1:attr.3">strict</a>
 ;<br/>

<b>thus </b><a NAME="E2:18_1_1"/>
not the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <a href="realset2.html#K3" title="REALSET2:func.3">dL-Z_2</a>  is <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>
 ; <i><font color="Red">:: according to </font></i><a class="ref" href="struct_0.html#D1" title="STRUCT_0:def.1">STRUCT_0:def 1</a><br/>

<a NAME="E3:18_1_1"/>
0 <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> 2
 
<b>by </b><i><a class="ref" href="card_1.html#T88" title="CARD_1:th.88">CARD_1:88</a>, <a class="ref" href="tarski.html#D2" title="TARSKI:def.2">TARSKI:def 2</a></i>;<br/>
<a NAME="E4:18_1_1"/><b>then </b><i><font color="Green" title="E27">A1</font></i>: 
 <a href="struct_0.html#K4" title="STRUCT_0:func.4">0.</a> <a href="realset2.html#K3" title="REALSET2:func.3">dL-Z_2</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 0
 
<b>by </b><i><a class="ref" href="funct_7.html#D1" title="FUNCT_7:def.1">FUNCT_7:def 1</a></i>;<br/>
<a NAME="E5:18_1_1"/>
1 <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> 2
 
<b>by </b><i><a class="ref" href="card_1.html#T88" title="CARD_1:th.88">CARD_1:88</a>, <a class="ref" href="tarski.html#D2" title="TARSKI:def.2">TARSKI:def 2</a></i>;<br/>
<b>hence </b><a NAME="E6:18_1_1"/>
 <a href="struct_0.html#K4" title="STRUCT_0:func.4">0.</a> <a href="realset2.html#K3" title="REALSET2:func.3">dL-Z_2</a>  <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a>  <a href="struct_0.html#K5" title="STRUCT_0:func.5">1.</a> <a href="realset2.html#K3" title="REALSET2:func.3">dL-Z_2</a> 
 <b>by </b><i><a class="txt" href="realset2.html#E4:18_1_1"><i><font color="Green" title="E27">A1</font></i></a>, <a class="ref" href="funct_7.html#D1" title="FUNCT_7:def.1">FUNCT_7:def 1</a></i>; <i><font color="Red">:: according to </font></i><a class="ref" href="struct_0.html#D8" title="STRUCT_0:def.8">STRUCT_0:def 8</a><br/>


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