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<b>let </b><font color="Maroon">f1</font> be   <a href="multop_1.html#NM1">TriOp</a> of <font color="Maroon">F<sub>1</sub></font>(), <font color="Maroon">f2</font> be   <a href="multop_1.html#NM1">TriOp</a> of <font color="Maroon">F<sub>1</sub></font>();<br/>

<b>assume </b><b>that </b><br/><a NAME="E1:3_1"/><i><font color="Green">E32</font></i>: 
for <font color="Olive">a</font>, <font color="Olive">b</font>, <font color="Olive">c</font> being   <a href="subset_1.html#M1">Element</a> of <font color="Maroon">F<sub>1</sub></font>() holds  <font color="Maroon">f1</font> <a href="multop_1.html#K2">.</a> <font color="Olive">a</font>,<font color="Olive">b</font>,<font color="Olive">c</font> <a href="hidden.html#R1">=</a> <font color="Maroon">F<sub>2</sub></font>(<font color="Olive">a</font>,<font color="Olive">b</font>,<font color="Olive">c</font>)
 <b>and </b><br/><a NAME="E2:3_1"/><i><font color="Green">E33</font></i>: 
for <font color="Olive">a</font>, <font color="Olive">b</font>, <font color="Olive">c</font> being   <a href="subset_1.html#M1">Element</a> of <font color="Maroon">F<sub>1</sub></font>() holds  <font color="Maroon">f2</font> <a href="multop_1.html#K2">.</a> <font color="Olive">a</font>,<font color="Olive">b</font>,<font color="Olive">c</font> <a href="hidden.html#R1">=</a> <font color="Maroon">F<sub>2</sub></font>(<font color="Olive">a</font>,<font color="Olive">b</font>,<font color="Olive">c</font>)
 ;<br/>

<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="3_1_1"><b>now </b></a><div class="add"><b>let </b><font color="Maroon">a</font> be    <a href="subset_1.html#M1">Element</a> of <font color="Maroon">F<sub>1</sub></font>(), <font color="Maroon">b</font> be    <a href="subset_1.html#M1">Element</a> of <font color="Maroon">F<sub>1</sub></font>(), <font color="Maroon">c</font> be    <a href="subset_1.html#M1">Element</a> of <font color="Maroon">F<sub>1</sub></font>();<br/><b>thus </b><font color="Maroon">f1</font> <a href="multop_1.html#K2">.</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<font color="Maroon">c</font> = 
<font color="Maroon">F<sub>2</sub></font>(<font color="Maroon">a</font>,<font color="Maroon">b</font>,<font color="Maroon">c</font>)
<b>by </b><i/>
<br/>.= 
<font color="Maroon">f2</font> <a href="multop_1.html#K2">.</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<font color="Maroon">c</font>
<b>by </b><i/>
;<br/></div><b>end;</b></div>
<b>hence </b><a NAME="E4:3_1"/>
<font color="Maroon">f1</font> <a href="funct_2.html#R2">=</a> <font color="Maroon">f2</font>
 <b>by </b><i><a class="ref" href="multop_1.html#T4">MULTOP_1:4</a></i>;<br/>


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