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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">x2</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">x4</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">x6</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">x7</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">x8</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">x9</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">x10</font> be    <a href="hidden.html#M1">set</a> ;<br/>



















<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="94_1"><b>now </b></a><div class="add"><b>let </b><font color="Maroon">x</font> be    <a href="hidden.html#M1">set</a> ;<br/><a NAME="E1:94_1"/><i><font color="Green">E17</font></i>: 
( <font color="Maroon">x</font> <a href="hidden.html#R2">in</a> <span class="p1"><a href="enumset1.html#K8" 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>,<font color="Maroon">x6</font>,<font color="Maroon">x7</font>,<font color="Maroon">x8</font>,<font color="Maroon">x9</font>,<font color="Maroon">x10</font></span><a href="enumset1.html#K8" target="_self">}</a></span> iff ( <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x1</font> or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x2</font> or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x3</font> or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x4</font> or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x5</font> or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x6</font> or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x7</font> or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x8</font> or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x9</font> or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x10</font> ) )
 <b>by </b><i/>;<br/><a NAME="E2:94_1"/><i><font color="Green">E18</font></i>: 
( <font color="Maroon">x</font> <a href="hidden.html#R2">in</a> <span class="p1"><a href="tarski.html#K1">{</a><span class="default"><font color="Maroon">x10</font></span><a href="tarski.html#K1">}</a></span> iff <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x10</font> )
 <b>by </b><i><a class="ref" href="tarski.html#D1">TARSKI:def 1</a></i>;<br/><a NAME="E3:94_1"/>
( <!--HUMANRECFAILED-->( ( not <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x1</font> &amp; not <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x2</font> &amp; not <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x3</font> &amp; not <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x4</font> &amp; not <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x5</font> &amp; not <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x6</font> &amp; not <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x7</font> &amp; not <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x8</font> &amp; not <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x9</font> &amp; not <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x10</font> ) or <font color="Maroon">x</font> <a href="hidden.html#R2">in</a> <span class="p1"><a href="enumset1.html#K7" 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>,<font color="Maroon">x6</font>,<font color="Maroon">x7</font>,<font color="Maroon">x8</font>,<font color="Maroon">x9</font></span><a href="enumset1.html#K7" target="_self">}</a></span> or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x10</font> ) &amp; ( ( not <font color="Maroon">x</font> <a href="hidden.html#R2">in</a> <span class="p1"><a href="enumset1.html#K7" 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>,<font color="Maroon">x6</font>,<font color="Maroon">x7</font>,<font color="Maroon">x8</font>,<font color="Maroon">x9</font></span><a href="enumset1.html#K7" target="_self">}</a></span> &amp; not <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x10</font> ) or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x1</font> or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x2</font> or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x3</font> or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x4</font> or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x5</font> or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x6</font> or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x7</font> or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x8</font> or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x9</font> or <font color="Maroon">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">x10</font> ) )
 <b>by </b><i/>;<br/><b>hence </b><a NAME="E4:94_1"/>
( <font color="Maroon">x</font> <a href="hidden.html#R2">in</a> <span class="p1"><a href="enumset1.html#K8" 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>,<font color="Maroon">x6</font>,<font color="Maroon">x7</font>,<font color="Maroon">x8</font>,<font color="Maroon">x9</font>,<font color="Maroon">x10</font></span><a href="enumset1.html#K8" target="_self">}</a></span> iff <font color="Maroon">x</font> <a href="hidden.html#R2">in</a> <span class="p1"><a href="enumset1.html#K7" 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>,<font color="Maroon">x6</font>,<font color="Maroon">x7</font>,<font color="Maroon">x8</font>,<font color="Maroon">x9</font></span><a href="enumset1.html#K7" target="_self">}</a></span> <a href="xboole_0.html#K2">\/</a> <span class="p1"><a href="tarski.html#K1">{</a><span class="default"><font color="Maroon">x10</font></span><a href="tarski.html#K1">}</a></span> )
 <b>by </b><i><a class="ref" href="enumset1.html#T84" target="_self">Th84</a>, <a class="ref" href="enumset1.html#T85" target="_self">Th85</a>, <a class="ref" href="xboole_0.html#D2">XBOOLE_0:def 2</a></i>;<br/></div><b>end;</b></div>
<b>hence </b><a NAME="E2:94"/>
<span class="p1"><a href="enumset1.html#K8" 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>,<font color="Maroon">x6</font>,<font color="Maroon">x7</font>,<font color="Maroon">x8</font>,<font color="Maroon">x9</font>,<font color="Maroon">x10</font></span><a href="enumset1.html#K8" target="_self">}</a></span> <a href="hidden.html#R1">=</a> <span class="p1"><a href="enumset1.html#K7" 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>,<font color="Maroon">x6</font>,<font color="Maroon">x7</font>,<font color="Maroon">x8</font>,<font color="Maroon">x9</font></span><a href="enumset1.html#K7" target="_self">}</a></span> <a href="xboole_0.html#K2">\/</a> <span class="p1"><a href="tarski.html#K1">{</a><span class="default"><font color="Maroon">x10</font></span><a href="tarski.html#K1">}</a></span>
 <b>by </b><i><a class="ref" href="tarski.html#T2">TARSKI:2</a></i>;<br/>


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