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<b>deffunc </b><font color="Maroon">H<sub>4</sub></font>(  <a href="subset_1.html#NM2">Subset</a> of <font color="Maroon">X</font>,  <a href="subset_1.html#NM2">Subset</a> of <font color="Maroon">X</font>) <b>-&gt; </b>   <a href="subset_1.html#M1">Element</a> of  <a href="zfmisc_1.html#K1">bool</a> <font color="Maroon">X</font> = <font color="Maroon">a<sub>1</sub></font> <a href="subset_1.html#K4">\/</a> <font color="Maroon">a<sub>2</sub></font>;<br/>
<b>consider </b><font color="Maroon">j</font> being   <a href="binop_1.html#NM2">BinOp</a> of  <a href="zfmisc_1.html#K1">bool</a> <font color="Maroon">X</font><b> such that </b><br/><a NAME="E2:1_1_1"/><i><font color="Green">E18</font></i>: 
for <font color="Olive">x</font>, <font color="Olive">y</font> being  <a href="subset_1.html#NM2">Subset</a> of <font color="Maroon">X</font> holds  <font color="Maroon">j</font> <a href="binop_1.html#K2">.</a> <font color="Olive">x</font>,<font color="Olive">y</font> <a href="hidden.html#R1">=</a> <font color="Maroon">H<sub>4</sub></font>(<font color="Olive">x</font>,<font color="Olive">y</font>)
 <b>from </b><i><a class="ref" href="binop_1.html#S4">BINOP_1:sch 4</a>();<br/></i>
<b>deffunc </b><font color="Maroon">H<sub>5</sub></font>(  <a href="subset_1.html#NM2">Subset</a> of <font color="Maroon">X</font>,  <a href="subset_1.html#NM2">Subset</a> of <font color="Maroon">X</font>) <b>-&gt; </b>   <a href="subset_1.html#M1">Element</a> of  <a href="zfmisc_1.html#K1">bool</a> <font color="Maroon">X</font> = <font color="Maroon">a<sub>1</sub></font> <a href="subset_1.html#K9">/\</a> <font color="Maroon">a<sub>2</sub></font>;<br/>
<b>consider </b><font color="Maroon">m</font> being   <a href="binop_1.html#NM2">BinOp</a> of  <a href="zfmisc_1.html#K1">bool</a> <font color="Maroon">X</font><b> such that </b><br/><a NAME="E4:1_1_1"/><i><font color="Green">E22</font></i>: 
for <font color="Olive">x</font>, <font color="Olive">y</font> being  <a href="subset_1.html#NM2">Subset</a> of <font color="Maroon">X</font> holds  <font color="Maroon">m</font> <a href="binop_1.html#K2">.</a> <font color="Olive">x</font>,<font color="Olive">y</font> <a href="hidden.html#R1">=</a> <font color="Maroon">H<sub>5</sub></font>(<font color="Olive">x</font>,<font color="Olive">y</font>)
 <b>from </b><i><a class="ref" href="binop_1.html#S4">BINOP_1:sch 4</a>();<br/></i>
<b>take </b>
 <a href="lattices.html#G3">LattStr</a>(# <span class="p1">(<span class="default"><a href="zfmisc_1.html#K1">bool</a> <font color="Maroon">X</font></span>)</span>,<font color="Maroon">j</font>,<font color="Maroon">m</font> #)
;<br/>

<b>thus </b><a NAME="E5:1_1_1"/>
( the <a href="struct_0.html#U1">carrier</a> of <a href="lattices.html#G3">LattStr</a>(# <span class="p1">(<span class="default"><a href="zfmisc_1.html#K1">bool</a> <font color="Maroon">X</font></span>)</span>,<font color="Maroon">j</font>,<font color="Maroon">m</font> #) <a href="hidden.html#R1">=</a>  <a href="zfmisc_1.html#K1">bool</a> <font color="Maroon">X</font> &amp; ( for <font color="Olive">Y</font>, <font color="Olive">Z</font> being  <a href="subset_1.html#NM2">Subset</a> of <font color="Maroon">X</font> holds <br/> ( the <a href="lattices.html#U2">L_join</a> of <a href="lattices.html#G3">LattStr</a>(# <span class="p1">(<span class="default"><a href="zfmisc_1.html#K1">bool</a> <font color="Maroon">X</font></span>)</span>,<font color="Maroon">j</font>,<font color="Maroon">m</font> #) <a href="binop_1.html#K1">.</a> <font color="Olive">Y</font>,<font color="Olive">Z</font> <a href="hidden.html#R1">=</a> <font color="Olive">Y</font> <a href="subset_1.html#K4">\/</a> <font color="Olive">Z</font> &amp; the <a href="lattices.html#U1">L_meet</a> of <a href="lattices.html#G3">LattStr</a>(# <span class="p1">(<span class="default"><a href="zfmisc_1.html#K1">bool</a> <font color="Maroon">X</font></span>)</span>,<font color="Maroon">j</font>,<font color="Maroon">m</font> #) <a href="binop_1.html#K1">.</a> <font color="Olive">Y</font>,<font color="Olive">Z</font> <a href="hidden.html#R1">=</a> <font color="Olive">Y</font> <a href="subset_1.html#K9">/\</a> <font color="Olive">Z</font> ) ) )
 <b>by </b><i>, </i>;<br/>


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