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<b>defpred </b><font color="Maroon">S<sub>1</sub></font>[   <a href="hidden.html#M1">set</a> ,   <a href="hidden.html#M1">set</a> ] <b>means </b> ex <font color="Olive">o</font> being  <a href="altcat_1.html#NM1">object</a> of <font color="Maroon">A</font> st <br/>( <font color="Maroon">a<sub>1</sub></font> <a href="hidden.html#R1">=</a> <font color="Olive">o</font> &amp; <font color="Maroon">a<sub>2</sub></font> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><font color="Maroon">t2</font> <a href="functor2.html#K2" target="_self">!</a> <font color="Olive">o</font></span>)</span> <a href="altcat_1.html#K5">*</a> <span class="p1">(<span class="default"><font color="Maroon">t1</font> <a href="functor2.html#K2" target="_self">!</a> <font color="Olive">o</font></span>)</span> );<br/>
<a NAME="E1:9_1_1"/><i><font color="Green">E30</font></i>: 
for <font color="Olive">a</font> being  <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">A</font>  ex <font color="Olive">j</font> being   <a href="hidden.html#M1">set</a>  st <font color="Maroon">S<sub>1</sub></font>[<font color="Olive">a</font>,<font color="Olive">j</font>]
 
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="9_1_1_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">A</font>;<br/>

<b>reconsider </b><font color="Maroon">o</font> = <font color="Maroon">a</font> as   <a href="altcat_1.html#NM1">object</a> of <font color="Maroon">A</font> ;<br/>
<b>consider </b><font color="Maroon">j</font> being    <a href="hidden.html#M1">set</a> <b> such that </b><br/><a NAME="E3:9_1_1_1"/><i><font color="Green">E32</font></i>: 
<font color="Maroon">j</font> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><font color="Maroon">t2</font> <a href="functor2.html#K2" target="_self">!</a> <font color="Maroon">o</font></span>)</span> <a href="altcat_1.html#K5">*</a> <span class="p1">(<span class="default"><font color="Maroon">t1</font> <a href="functor2.html#K2" target="_self">!</a> <font color="Maroon">o</font></span>)</span>
 ;<br/>
<b>thus </b><a NAME="E4:9_1_1_1"/>
 ex <font color="Olive">j</font> being   <a href="hidden.html#M1">set</a>  st <font color="Maroon">S<sub>1</sub></font>[<font color="Maroon">a</font>,<font color="Olive">j</font>]
 <b>by </b><i/>;<br/>


</div><b>end;</b></div>
<b>consider </b><font color="Maroon">t</font> being    <a href="pboole.html#M1">ManySortedSet</a> of the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">A</font><b> such that </b><br/><a NAME="E3:9_1_1"/><i><font color="Green">E34</font></i>: 
for <font color="Olive">a</font> being  <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">A</font> holds  <font color="Maroon">S<sub>1</sub></font>[<font color="Olive">a</font>,<font color="Maroon">t</font> <a href="funct_1.html#K1">.</a> <font color="Olive">a</font>]
 <b>from </b><i><a class="ref" href="msualg_9.html#S1">MSUALG_9:sch 1</a>();<br/></i>
<a NAME="E4:9_1_1"/><i><font color="Green">E37</font></i>: 
<font color="Maroon">F</font> <a href="functor2.html#R1" target="_self">is_transformable_to</a> <font color="Maroon">F2</font>
 
<b>by </b><i>, , </i>;<br/>
<a NAME="E5:9_1_1"/>
for <font color="Olive">a</font> being  <a href="altcat_1.html#NM1">object</a> of <font color="Maroon">A</font> holds  <font color="Maroon">t</font> <a href="funct_1.html#K1">.</a> <font color="Olive">a</font> is   <a href="altcat_1.html#NM2">Morphism</a> of <span class="p1">(<span class="default"><font color="Maroon">F</font> <a href="functor0.html#K3">.</a> <font color="Olive">a</font></span>)</span>,<span class="p1">(<span class="default"><font color="Maroon">F2</font> <a href="functor0.html#K3">.</a> <font color="Olive">a</font></span>)</span>
 
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="9_1_1_2"><b>proof </b></a><div class="add">

<b>let </b><font color="Maroon">o</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">A</font>;<br/>

<b>consider </b><font color="Maroon">a</font> being   <a href="altcat_1.html#NM1">object</a> of <font color="Maroon">A</font><b> such that </b><br/><a NAME="E2:9_1_1_2"/><i><font color="Green">E38</font></i>: 
( <font color="Maroon">o</font> <a href="hidden.html#R1">=</a> <font color="Maroon">a</font> &amp; <font color="Maroon">t</font> <a href="funct_1.html#K1">.</a> <font color="Maroon">o</font> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><font color="Maroon">t2</font> <a href="functor2.html#K2" target="_self">!</a> <font color="Maroon">a</font></span>)</span> <a href="altcat_1.html#K5">*</a> <span class="p1">(<span class="default"><font color="Maroon">t1</font> <a href="functor2.html#K2" target="_self">!</a> <font color="Maroon">a</font></span>)</span> )
 <b>by </b><i/>;<br/>
<b>thus </b><a NAME="E3:9_1_1_2"/>
<font color="Maroon">t</font> <a href="funct_1.html#K1">.</a> <font color="Maroon">o</font> is   <a href="altcat_1.html#NM2">Morphism</a> of <span class="p1">(<span class="default"><font color="Maroon">F</font> <a href="functor0.html#K3">.</a> <font color="Maroon">o</font></span>)</span>,<span class="p1">(<span class="default"><font color="Maroon">F2</font> <a href="functor0.html#K3">.</a> <font color="Maroon">o</font></span>)</span>
 <b>by </b><i/>;<br/>


</div><b>end;</b></div>
<b>then reconsider </b><font color="Maroon">t'</font> = <font color="Maroon">t</font> as    <a href="functor2.html#M1" target="_self">transformation</a> of <font color="Maroon">F</font>,<font color="Maroon">F2</font> <b>by </b><i>, </i>;<br/>
<b>take </b>
<font color="Maroon">t'</font>
;<br/>

<b>let </b><font color="Maroon">a</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">A</font>;<br/>

<b>consider </b><font color="Maroon">o</font> being   <a href="altcat_1.html#NM1">object</a> of <font color="Maroon">A</font><b> such that </b><br/><a NAME="E8:9_1_1"/><i><font color="Green">E44</font></i>: 
( <font color="Maroon">a</font> <a href="hidden.html#R1">=</a> <font color="Maroon">o</font> &amp; <font color="Maroon">t</font> <a href="funct_1.html#K1">.</a> <font color="Maroon">a</font> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><font color="Maroon">t2</font> <a href="functor2.html#K2" target="_self">!</a> <font color="Maroon">o</font></span>)</span> <a href="altcat_1.html#K5">*</a> <span class="p1">(<span class="default"><font color="Maroon">t1</font> <a href="functor2.html#K2" target="_self">!</a> <font color="Maroon">o</font></span>)</span> )
 <b>by </b><i/>;<br/>
<b>thus </b><a NAME="E9:9_1_1"/>
<font color="Maroon">t'</font> <a href="functor2.html#K2" target="_self">!</a> <font color="Maroon">a</font> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><font color="Maroon">t2</font> <a href="functor2.html#K2" target="_self">!</a> <font color="Maroon">a</font></span>)</span> <a href="altcat_1.html#K5">*</a> <span class="p1">(<span class="default"><font color="Maroon">t1</font> <a href="functor2.html#K2" target="_self">!</a> <font color="Maroon">a</font></span>)</span>
 <b>by </b><i>, , </i>;<br/>


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