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<b>defpred </b><font color="Maroon">S<sub>1</sub></font>[   <a href="hidden.html#M1">set</a> ] <b>means </b>( <font color="Maroon">P<sub>1</sub></font>[<font color="Maroon">a<sub>1</sub></font>] &amp; <font color="Maroon">a<sub>1</sub></font> is   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">F<sub>1</sub></font>() );<br/>
<div><i><font color="Green">E34</font></i>: <a class="txt" onclick="hs2(this)" href="javascript:()" title="4_1_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="E1:4_1_1"/>
( <font color="Maroon">x</font> is   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">F<sub>2</sub></font>() implies <font color="Maroon">x</font> is   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">F<sub>1</sub></font>() )
 <b>by </b><i><a class="ref" href="yellow_0.html#T59">YELLOW_0:59</a></i>;<br/><b>hence </b><a NAME="E2:4_1_1"/>
( <font color="Maroon">x</font> is   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">F<sub>2</sub></font>() iff <font color="Maroon">S<sub>1</sub></font>[<font color="Maroon">x</font>] )
 <b>by </b><i/>;<br/></div><b>end;</b></div>
<div><i><font color="Green">E35</font></i>: <a class="txt" onclick="hs2(this)" href="javascript:()" title="4_1_2"><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="E1:4_1_2"/>
( <font color="Maroon">x</font> is   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">F<sub>3</sub></font>() implies <font color="Maroon">x</font> is   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">F<sub>1</sub></font>() )
 <b>by </b><i><a class="ref" href="yellow_0.html#T59">YELLOW_0:59</a></i>;<br/><b>hence </b><a NAME="E2:4_1_2"/>
( <font color="Maroon">x</font> is   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">F<sub>3</sub></font>() iff <font color="Maroon">S<sub>1</sub></font>[<font color="Maroon">x</font>] )
 <b>by </b><i/>;<br/></div><b>end;</b></div>
<b>thus </b><a NAME="E3:4_1"/>
 <a href="orders_2.html#G1">RelStr</a>(# the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">F<sub>2</sub></font>(),the <a href="orders_2.html#U1">InternalRel</a> of <font color="Maroon">F<sub>2</sub></font>() #) <a href="hidden.html#R1">=</a>  <a href="orders_2.html#G1">RelStr</a>(# the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">F<sub>3</sub></font>(),the <a href="orders_2.html#U1">InternalRel</a> of <font color="Maroon">F<sub>3</sub></font>() #)
 <b>from </b><i><a class="ref" href="waybel10.html#S3" target="_self">WAYBEL10:sch 3</a>(, );</i><br/>


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