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<b>let </b><font color="Maroon">Q</font> be  non <a href="struct_0.html#V3">empty</a>  <a href="quantal1.html#L3" target="_self">Girard-QuantaleStr</a> ;<br/>

<b>assume </b><a NAME="E1:53"/><i><font color="Green">E26</font></i>: 
 <a href="lattices.html#G3">LattStr</a>(# the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">Q</font>,the <a href="lattices.html#U2">L_join</a> of <font color="Maroon">Q</font>,the <a href="lattices.html#U1">L_meet</a> of <font color="Maroon">Q</font> #) <a href="hidden.html#R1">=</a>  <a href="lattice3.html#K1">BooleLatt</a> <a href="xboole_0.html#K1">{}</a> 
 ;<br/>

<b>set </b><font color="Maroon">c</font> = the <a href="quantal1.html#U1" target="_self">absurd</a> of <font color="Maroon">Q</font>;<br/>
<a NAME="E2:53"/><i><font color="Green">E27</font></i>: 
<font color="Maroon">H<sub>1</sub></font>(<font color="Maroon">Q</font>) <a href="hidden.html#R1">=</a> <span class="p1"><a href="tarski.html#K1">{</a><span class="default"><a href="xboole_0.html#K1">{}</a> </span><a href="tarski.html#K1">}</a></span>
 
<b>by </b><i>, <a class="ref" href="lattice3.html#D1">LATTICE3:def 1</a>, <a class="ref" href="zfmisc_1.html#T1">ZFMISC_1:1</a></i>;<br/>
<b>thus </b><a NAME="E3:53"/>
<font color="Maroon">Q</font> is <a href="quantal1.html#V20" target="_self">cyclic</a>
 <div><a class="txt" onclick="hs2(this)" href="javascript:()" title="53_1"><b>proof </b></a><div class="add">

<b>let </b><font color="Maroon">a</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">Q</font>; <i><font color="Red">:: according to </font></i><a class="ref" href="quantal1.html#D18" target="_self">QUANTAL1:def 18</a>,<a class="ref" href="quantal1.html#D19" target="_self">QUANTAL1:def 19</a><br/>

<a NAME="E1:53_1"/>
( <font color="Maroon">a</font> <a href="quantal1.html#K1" target="_self">-r&gt;</a> the <a href="quantal1.html#U1" target="_self">absurd</a> of <font color="Maroon">Q</font> <a href="hidden.html#R1">=</a>  <a href="xboole_0.html#K1">{}</a>  &amp; <font color="Maroon">a</font> <a href="quantal1.html#K2" target="_self">-l&gt;</a> the <a href="quantal1.html#U1" target="_self">absurd</a> of <font color="Maroon">Q</font> <a href="hidden.html#R1">=</a>  <a href="xboole_0.html#K1">{}</a>  )
 
<b>by </b><i><a class="txt" href="quantal1.html#E1:53"><i><font color="Green">E26</font></i></a>, <a class="ref" href="tarski.html#D1">TARSKI:def 1</a></i>;<br/>
<b>hence </b><a NAME="E2:53_1"/>
<font color="Maroon">a</font> <a href="quantal1.html#K1" target="_self">-r&gt;</a> the <a href="quantal1.html#U1" target="_self">absurd</a> of <font color="Maroon">Q</font> <a href="hidden.html#R1">=</a> <font color="Maroon">a</font> <a href="quantal1.html#K2" target="_self">-l&gt;</a> the <a href="quantal1.html#U1" target="_self">absurd</a> of <font color="Maroon">Q</font>
 ;<br/>


</div><b>end;</b></div>

<b>let </b><font color="Maroon">a</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">Q</font>; <i><font color="Red">:: according to </font></i><a class="ref" href="quantal1.html#D17" target="_self">QUANTAL1:def 17</a>,<a class="ref" href="quantal1.html#D20" target="_self">QUANTAL1:def 20</a><br/>

<a NAME="E4:53"/>
( <span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="quantal1.html#K1" target="_self">-r&gt;</a> the <a href="quantal1.html#U1" target="_self">absurd</a> of <font color="Maroon">Q</font></span>)</span> <a href="quantal1.html#K2" target="_self">-l&gt;</a> the <a href="quantal1.html#U1" target="_self">absurd</a> of <font color="Maroon">Q</font> <a href="hidden.html#R1">=</a>  <a href="xboole_0.html#K1">{}</a>  &amp; <span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="quantal1.html#K2" target="_self">-l&gt;</a> the <a href="quantal1.html#U1" target="_self">absurd</a> of <font color="Maroon">Q</font></span>)</span> <a href="quantal1.html#K1" target="_self">-r&gt;</a> the <a href="quantal1.html#U1" target="_self">absurd</a> of <font color="Maroon">Q</font> <a href="hidden.html#R1">=</a>  <a href="xboole_0.html#K1">{}</a>  &amp; <font color="Maroon">a</font> <a href="hidden.html#R1">=</a>  <a href="xboole_0.html#K1">{}</a>  )
 
<b>by </b><i><a class="txt" href="quantal1.html#E1:53"><i><font color="Green">E26</font></i></a>, <a class="ref" href="tarski.html#D1">TARSKI:def 1</a></i>;<br/>
<b>hence </b><a NAME="E5:53"/>
( <span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="quantal1.html#K1" target="_self">-r&gt;</a> the <a href="quantal1.html#U1" target="_self">absurd</a> of <font color="Maroon">Q</font></span>)</span> <a href="quantal1.html#K2" target="_self">-l&gt;</a> the <a href="quantal1.html#U1" target="_self">absurd</a> of <font color="Maroon">Q</font> <a href="hidden.html#R1">=</a> <font color="Maroon">a</font> &amp; <span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="quantal1.html#K2" target="_self">-l&gt;</a> the <a href="quantal1.html#U1" target="_self">absurd</a> of <font color="Maroon">Q</font></span>)</span> <a href="quantal1.html#K1" target="_self">-r&gt;</a> the <a href="quantal1.html#U1" target="_self">absurd</a> of <font color="Maroon">Q</font> <a href="hidden.html#R1">=</a> <font color="Maroon">a</font> )
 ;<br/>


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