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

<b>given </b><font color="Maroon">a</font> being    <a href="hidden.html#M1">set</a> , <font color="Maroon">b</font> being    <a href="hidden.html#M1">set</a> , <font color="Maroon">c</font> being    <a href="hidden.html#M1">set</a> <b> such that </b><a NAME="E1:2"/><i><font color="Green">E30</font></i>: 
<font color="Maroon">z</font> <a href="hidden.html#R1">=</a> <span class="p1"><a href="mcart_1.html#K3">[</a><span class="default"><font color="Maroon">a</font>,<font color="Maroon">b</font>,<font color="Maroon">c</font></span><a href="mcart_1.html#K3">]</a></span>
 ;<br/>

<a NAME="E2:2"/>
( <font color="Maroon">z</font> <a href="recdef_2.html#K1" target="_self">`1_3</a>  <a href="hidden.html#R1">=</a> <font color="Maroon">a</font> &amp; <font color="Maroon">z</font> <a href="recdef_2.html#K2" target="_self">`2_3</a>  <a href="hidden.html#R1">=</a> <font color="Maroon">b</font> &amp; <font color="Maroon">z</font> <a href="recdef_2.html#K3" target="_self">`3_3</a>  <a href="hidden.html#R1">=</a> <font color="Maroon">c</font> )
 
<b>by </b><i>, , , </i>;<br/>
<b>hence </b><a NAME="E3:2"/>
<font color="Maroon">z</font> <a href="hidden.html#R1">=</a> <span class="p1"><a href="mcart_1.html#K3">[</a><span class="default"><span class="p2">(<span class="default"><font color="Maroon">z</font> <a href="recdef_2.html#K1" target="_self">`1_3</a> </span>)</span>,<span class="p2">(<span class="default"><font color="Maroon">z</font> <a href="recdef_2.html#K2" target="_self">`2_3</a> </span>)</span>,<span class="p2">(<span class="default"><font color="Maroon">z</font> <a href="recdef_2.html#K3" target="_self">`3_3</a> </span>)</span></span><a href="mcart_1.html#K3">]</a></span>
 <b>by </b><i/>;<br/>


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