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<b>consider </b><font color="Maroon">o</font> being   <a href="unialg_2.html#NM5">operation</a> of <font color="Maroon">U0</font><b> such that </b><br/><a NAME="E2:34_1_1"/><i><font color="Green">E20</font></i>: 
 <a href="unialg_1.html#K3">arity</a> <font color="Maroon">o</font> <a href="hidden.html#R1">=</a> 0
 <b>by </b><i><a class="txt" href="unialg_2.html#E2:34_1_1"><i><font color="Green">E20</font></i></a></i>;<br/>
 <a href="relat_1.html#K1">dom</a> <font color="Maroon">o</font> = 
0 <a href="finseq_2.html#K4">-tuples_on</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">U0</font>
<b>by </b><i>, </i>
<br/>.= 
<span class="p1"><a href="tarski.html#K1">{</a><span class="default"><span class="p2">(<span class="default"><a href="finseq_1.html#K6">&lt;*&gt;</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">U0</font></span>)</span></span><a href="tarski.html#K1">}</a></span>
<b>by </b><i><a class="ref" href="finseq_2.html#T112">FINSEQ_2:112</a></i>
;<br/>
<a NAME="E4:34_1_1"/><b>then </b>
 <a href="finseq_1.html#K6">&lt;*&gt;</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">U0</font> <a href="hidden.html#R2">in</a>  <a href="relat_1.html#K1">dom</a> <font color="Maroon">o</font>
 
<b>by </b><i><a class="ref" href="tarski.html#D1">TARSKI:def 1</a></i>;<br/>
<a NAME="E5:34_1_1"/><b>then </b><i><font color="Green">E26</font></i>: 
( <font color="Maroon">o</font> <a href="funct_1.html#K1">.</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K6">&lt;*&gt;</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">U0</font></span>)</span> <a href="hidden.html#R2">in</a>  <a href="relat_1.html#K2">rng</a> <font color="Maroon">o</font> &amp;  <a href="relat_1.html#K2">rng</a> <font color="Maroon">o</font> <a href="tarski.html#R1">c=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">U0</font> )
 
<b>by </b><i><a class="ref" href="funct_1.html#D5">FUNCT_1:def 5</a>, <a class="ref" href="relset_1.html#T12">RELSET_1:12</a></i>;<br/>
<b>then reconsider </b><font color="Maroon">u</font> = <font color="Maroon">o</font> <a href="funct_1.html#K1">.</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K6">&lt;*&gt;</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">U0</font></span>)</span> as   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">U0</font> ;<br/>
<a NAME="E7:34_1_1"/>
<font color="Maroon">u</font> <a href="hidden.html#R2">in</a> <span class="p1">{<span class="default"> <font color="Olive">a</font> where <font color="Olive">a</font> is   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">U0</font> :  ex <font color="Olive">o</font> being  <a href="unialg_2.html#NM5">operation</a> of <font color="Maroon">U0</font> st <br/>(  <a href="unialg_1.html#K3">arity</a> <font color="Olive">o</font> <a href="hidden.html#R1">=</a> 0 &amp; <font color="Olive">a</font> <a href="hidden.html#R2">in</a>  <a href="relat_1.html#K2">rng</a> <font color="Olive">o</font> ) </span>}</span> 
 
<b>by </b><i>, <a class="ref" href="unialg_2.html#T2" target="_self">Th2</a></i>;<br/>
<b>hence </b><a NAME="E8:34_1_1"/>
not  <a href="unialg_2.html#K6" target="_self">Constants</a> <font color="Maroon">U0</font> is <a href="xboole_0.html#V1">empty</a>
 ;<br/>


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