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<b>let </b><font color="Maroon" title="c1">X1</font>, <font color="Maroon" title="c2">X2</font>, <font color="Maroon" title="c3">X3</font>, <font color="Maroon" title="c4">X4</font>, <font color="Maroon" title="c5">X5</font>, <font color="Maroon" title="c6">X6</font>, <font color="Maroon" title="c7">X7</font>, <font color="Maroon" title="c8">X8</font>, <font color="Maroon" title="c9">X9</font> be    <a href="hidden.html#M1" title="HIDDEN:mode.1">set</a> ;<br/><b>let </b><font color="Maroon" title="c10">A1</font> be   <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <font color="Maroon" title="c1">X1</font>;<br/><b>let </b><font color="Maroon" title="c11">A2</font> be   <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <font color="Maroon" title="c2">X2</font>;<br/><b>let </b><font color="Maroon" title="c12">A3</font> be   <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <font color="Maroon" title="c3">X3</font>;<br/><b>let </b><font color="Maroon" title="c13">A4</font> be   <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <font color="Maroon" title="c4">X4</font>;<br/><b>let </b><font color="Maroon" title="c14">A5</font> be   <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <font color="Maroon" title="c5">X5</font>;<br/><b>let </b><font color="Maroon" title="c15">A6</font> be   <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <font color="Maroon" title="c6">X6</font>;<br/><b>let </b><font color="Maroon" title="c16">A7</font> be   <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <font color="Maroon" title="c7">X7</font>;<br/><b>let </b><font color="Maroon" title="c17">A8</font> be   <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <font color="Maroon" title="c8">X8</font>;<br/><b>let </b><font color="Maroon" title="c18">A9</font> be   <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <font color="Maroon" title="c9">X9</font>;<br/><b>let </b><font color="Maroon" title="c19">x</font> be    <a href="subset_1.html#M1" title="SUBSET_1:mode.1">Element</a> of <span class="p1"><a href="mcart_6.html#K2" title="MCART_6:func.2">[:</a><span class="default"><font color="Maroon" title="c1">X1</font>,<font color="Maroon" title="c2">X2</font>,<font color="Maroon" title="c3">X3</font>,<font color="Maroon" title="c4">X4</font>,<font color="Maroon" title="c5">X5</font>,<font color="Maroon" title="c6">X6</font>,<font color="Maroon" title="c7">X7</font>,<font color="Maroon" title="c8">X8</font>,<font color="Maroon" title="c9">X9</font></span><a href="mcart_6.html#K2" title="MCART_6:func.2">:]</a></span>;<br/>





































<b>assume </b><a NAME="E1:43"/><i><font color="Green" title="E21">A1</font></i>: 
<font color="Maroon" title="c19">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <span class="p1"><a href="mcart_6.html#K2" title="MCART_6:func.2">[:</a><span class="default"><font color="Maroon" title="c10">A1</font>,<font color="Maroon" title="c11">A2</font>,<font color="Maroon" title="c12">A3</font>,<font color="Maroon" title="c13">A4</font>,<font color="Maroon" title="c14">A5</font>,<font color="Maroon" title="c15">A6</font>,<font color="Maroon" title="c16">A7</font>,<font color="Maroon" title="c17">A8</font>,<font color="Maroon" title="c18">A9</font></span><a href="mcart_6.html#K2" title="MCART_6:func.2">:]</a></span>
 ;<br/>

<a NAME="E2:43"/><b>then </b><i><font color="Green" title="E22">A2</font></i>: 
( <font color="Maroon" title="c10">A1</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  &amp; <font color="Maroon" title="c11">A2</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  &amp; <font color="Maroon" title="c12">A3</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  &amp; <font color="Maroon" title="c13">A4</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  &amp; <font color="Maroon" title="c14">A5</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  &amp; <font color="Maroon" title="c15">A6</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  &amp; <font color="Maroon" title="c16">A7</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  &amp; <font color="Maroon" title="c17">A8</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  &amp; <font color="Maroon" title="c18">A9</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  )
 
<b>by </b><i><a class="ref" href="mcart_6.html#T20" target="_self" title="MCART_6:th.20">Th20</a></i>;<br/>
<b>reconsider </b><font color="Maroon" title="c20">y</font> = <font color="Maroon" title="c19">x</font> as    <a href="subset_1.html#M1" title="SUBSET_1:mode.1">Element</a> of <span class="p1"><a href="mcart_6.html#K2" title="MCART_6:func.2">[:</a><span class="default"><font color="Maroon" title="c10">A1</font>,<font color="Maroon" title="c11">A2</font>,<font color="Maroon" title="c12">A3</font>,<font color="Maroon" title="c13">A4</font>,<font color="Maroon" title="c14">A5</font>,<font color="Maroon" title="c15">A6</font>,<font color="Maroon" title="c16">A7</font>,<font color="Maroon" title="c17">A8</font>,<font color="Maroon" title="c18">A9</font></span><a href="mcart_6.html#K2" title="MCART_6:func.2">:]</a></span> <b>by </b><i><a class="txt" href="mcart_6.html#E1:43"><i><font color="Green" title="E21">A1</font></i></a></i>;<br/>
<a NAME="E4:43"/>
( <font color="Maroon" title="c20">y</font> <a href="mcart_6.html#K3" title="MCART_6:func.3">`1</a>  <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c10">A1</font> &amp; <font color="Maroon" title="c20">y</font> <a href="mcart_6.html#K4" title="MCART_6:func.4">`2</a>  <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c11">A2</font> &amp; <font color="Maroon" title="c20">y</font> <a href="mcart_6.html#K5" title="MCART_6:func.5">`3</a>  <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c12">A3</font> &amp; <font color="Maroon" title="c20">y</font> <a href="mcart_6.html#K6" title="MCART_6:func.6">`4</a>  <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c13">A4</font> &amp; <font color="Maroon" title="c20">y</font> <a href="mcart_6.html#K7" title="MCART_6:func.7">`5</a>  <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c14">A5</font> &amp; <font color="Maroon" title="c20">y</font> <a href="mcart_6.html#K8" title="MCART_6:func.8">`6</a>  <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c15">A6</font> &amp; <font color="Maroon" title="c20">y</font> <a href="mcart_6.html#K9" title="MCART_6:func.9">`7</a>  <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c16">A7</font> &amp; <font color="Maroon" title="c20">y</font> <a href="mcart_6.html#K10" title="MCART_6:func.10">`8</a>  <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c17">A8</font> &amp; <font color="Maroon" title="c20">y</font> <a href="mcart_6.html#K11" title="MCART_6:func.11">`9</a>  <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c18">A9</font> )
 
<b>by </b><i><a class="txt" href="mcart_6.html#E2:43"><i><font color="Green" title="E22">A2</font></i></a></i>;<br/>
<b>hence </b><a NAME="E5:43"/>
( <font color="Maroon" title="c19">x</font> <a href="mcart_6.html#K3" title="MCART_6:func.3">`1</a>  <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c10">A1</font> &amp; <font color="Maroon" title="c19">x</font> <a href="mcart_6.html#K4" title="MCART_6:func.4">`2</a>  <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c11">A2</font> &amp; <font color="Maroon" title="c19">x</font> <a href="mcart_6.html#K5" title="MCART_6:func.5">`3</a>  <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c12">A3</font> &amp; <font color="Maroon" title="c19">x</font> <a href="mcart_6.html#K6" title="MCART_6:func.6">`4</a>  <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c13">A4</font> &amp; <font color="Maroon" title="c19">x</font> <a href="mcart_6.html#K7" title="MCART_6:func.7">`5</a>  <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c14">A5</font> &amp; <font color="Maroon" title="c19">x</font> <a href="mcart_6.html#K8" title="MCART_6:func.8">`6</a>  <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c15">A6</font> &amp; <font color="Maroon" title="c19">x</font> <a href="mcart_6.html#K9" title="MCART_6:func.9">`7</a>  <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c16">A7</font> &amp; <font color="Maroon" title="c19">x</font> <a href="mcart_6.html#K10" title="MCART_6:func.10">`8</a>  <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c17">A8</font> &amp; <font color="Maroon" title="c19">x</font> <a href="mcart_6.html#K11" title="MCART_6:func.11">`9</a>  <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c18">A9</font> )
 <b>by </b><i><a class="ref" href="mcart_6.html#T43" target="_self" title="MCART_6:th.43">Th43</a></i>;<br/>


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