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<b>let </b><font color="Maroon">D1</font> be    <a href="hidden.html#M1">set</a> , <font color="Maroon">D2</font> be    <a href="hidden.html#M1">set</a> ;<br/>

<b>assume </b><a NAME="E1:116"/><i><font color="Green">E31</font></i>: 
<font color="Maroon">D1</font> <a href="tarski.html#R1">c=</a> <font color="Maroon">D2</font>
 ;<br/>

<b>let </b><font color="Maroon">x</font> be    <a href="hidden.html#M1">set</a> ; <i><font color="Red">:: according to </font></i><a class="ref" href="tarski.html#D3">TARSKI:def 3</a><br/>

<b>assume </b><a NAME="E2:116"/>
<font color="Maroon">x</font> <a href="hidden.html#R2">in</a> <font color="Maroon">D1</font> <a href="finseq_1.html#K13" target="_self">*</a> 
 ;<br/>

<b>then reconsider </b><font color="Maroon">p</font> = <font color="Maroon">x</font> as    <a href="finseq_1.html#M2" target="_self">FinSequence</a> of <font color="Maroon">D1</font> <b>by </b><i/>;<br/>
<a NAME="E4:116"/>
 <a href="relat_1.html#K2">rng</a> <font color="Maroon">p</font> <a href="tarski.html#R1">c=</a> <font color="Maroon">D1</font>
 
<b>by </b><i/>;<br/>
<a NAME="E5:116"/><b>then </b>
 <a href="relat_1.html#K2">rng</a> <font color="Maroon">p</font> <a href="tarski.html#R1">c=</a> <font color="Maroon">D2</font>
 
<b>by </b><i>, <a class="ref" href="xboole_1.html#T1">XBOOLE_1:1</a></i>;<br/>
<a NAME="E6:116"/><b>then </b>
<font color="Maroon">x</font> is    <a href="finseq_1.html#M2" target="_self">FinSequence</a> of <font color="Maroon">D2</font>
 
<b>by </b><i/>;<br/>
<b>hence </b><a NAME="E7:116"/>
<font color="Maroon">x</font> <a href="hidden.html#R2">in</a> <font color="Maroon">D2</font> <a href="finseq_1.html#K13" target="_self">*</a> 
 <b>by </b><i/>;<br/>


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