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<b>let </b><font color="Maroon">X1</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">Y1</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">X2</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">Y2</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">X3</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">Y3</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">X4</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">Y4</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">X5</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">Y5</font> be    <a href="hidden.html#M1">set</a> ;<br/>



















<b>assume </b><a NAME="E1:37"/>
( <font color="Maroon">X1</font> <a href="tarski.html#R1">c=</a> <font color="Maroon">Y1</font> &amp; <font color="Maroon">X2</font> <a href="tarski.html#R1">c=</a> <font color="Maroon">Y2</font> &amp; <font color="Maroon">X3</font> <a href="tarski.html#R1">c=</a> <font color="Maroon">Y3</font> &amp; <font color="Maroon">X4</font> <a href="tarski.html#R1">c=</a> <font color="Maroon">Y4</font> )
 ;<br/>

<a NAME="E2:37"/><b>then </b><i><font color="Green">E44</font></i>: 
<span class="p1"><a href="zfmisc_1.html#K4">[:</a><span class="default"><font color="Maroon">X1</font>,<font color="Maroon">X2</font>,<font color="Maroon">X3</font>,<font color="Maroon">X4</font></span><a href="zfmisc_1.html#K4">:]</a></span> <a href="tarski.html#R1">c=</a> <span class="p1"><a href="zfmisc_1.html#K4">[:</a><span class="default"><font color="Maroon">Y1</font>,<font color="Maroon">Y2</font>,<font color="Maroon">Y3</font>,<font color="Maroon">Y4</font></span><a href="zfmisc_1.html#K4">:]</a></span>
 
<b>by </b><i><a class="ref" href="mcart_1.html#T88">MCART_1:88</a></i>;<br/>
<b>assume </b><a NAME="E3:37"/>
<font color="Maroon">X5</font> <a href="tarski.html#R1">c=</a> <font color="Maroon">Y5</font>
 ;<br/>

<b>hence </b><a NAME="E4:37"/>
<span class="p1"><a href="mcart_2.html#K2" target="_self">[:</a><span class="default"><font color="Maroon">X1</font>,<font color="Maroon">X2</font>,<font color="Maroon">X3</font>,<font color="Maroon">X4</font>,<font color="Maroon">X5</font></span><a href="mcart_2.html#K2" target="_self">:]</a></span> <a href="tarski.html#R1">c=</a> <span class="p1"><a href="mcart_2.html#K2" target="_self">[:</a><span class="default"><font color="Maroon">Y1</font>,<font color="Maroon">Y2</font>,<font color="Maroon">Y3</font>,<font color="Maroon">Y4</font>,<font color="Maroon">Y5</font></span><a href="mcart_2.html#K2" target="_self">:]</a></span>
 <b>by </b><i>, <a class="ref" href="zfmisc_1.html#T119">ZFMISC_1:119</a></i>;<br/>


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