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<b>take </b><font color="Maroon">c<sub>1</sub></font> =  <a href="struct_0.html#G1">1-sorted</a>(# <span class="p1"><a href="tarski.html#K1">{</a><span class="default">0</span><a href="tarski.html#K1">}</a></span> #);<br/>

<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="8_1_1_1"><b>now </b></a><div class="add"><b>let </b><font color="Maroon">c<sub>2</sub></font>, <font color="Maroon">c<sub>3</sub></font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">c<sub>1</sub></font>;<br/><b>thus </b><font color="Maroon">c<sub>2</sub></font> = 
0
<b>by </b><i><a class="ref" href="tarski.html#D1">TARSKI:def 1</a></i>
<br/>.= 
<font color="Maroon">c<sub>3</sub></font>
<b>by </b><i><a class="ref" href="tarski.html#D1">TARSKI:def 1</a></i>
;<br/></div><b>end;</b></div>
<b>hence </b><a NAME="E2:8_1_1"/>
<font color="Maroon">c<sub>1</sub></font> is <a href="realset2.html#V3" target="_self">trivial</a>
 <b>by </b><i><a class="txt" href="realset2.html#E7"><i><font color="Green">Lemma6</font></i></a></i>;<br/>


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