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<b>let </b><font color="Maroon">S1</font> be    <a href="msualg_1.html#L1">ManySortedSign</a> , <font color="Maroon">S2</font> be    <a href="msualg_1.html#L1">ManySortedSign</a> , <font color="Maroon">S3</font> be    <a href="msualg_1.html#L1">ManySortedSign</a> ;<br/>

<b>given </b><font color="Maroon">f1</font> being   <a href="funct_1.html#NM1">Function</a>, <font color="Maroon">g1</font> being   <a href="funct_1.html#NM1">Function</a><b> such that </b><a NAME="E1:65"/><i><font color="Green">E29</font></i>: 
( <font color="Maroon">f1</font>,<font color="Maroon">g1</font> <a href="pua2mss1.html#R3" target="_self">form_morphism_between</a> <font color="Maroon">S2</font>,<font color="Maroon">S1</font> &amp;  <a href="relat_1.html#K2">rng</a> <font color="Maroon">f1</font> <a href="hidden.html#R1">=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">S1</font> &amp;  <a href="relat_1.html#K2">rng</a> <font color="Maroon">g1</font> <a href="hidden.html#R1">=</a> the <a href="msualg_1.html#U1">OperSymbols</a> of <font color="Maroon">S1</font> )
 ; <i><font color="Red">:: according to </font></i><a class="ref" href="pua2mss1.html#D14" target="_self">PUA2MSS1:def 14</a><br/>

<b>given </b><font color="Maroon">f2</font> being   <a href="funct_1.html#NM1">Function</a>, <font color="Maroon">g2</font> being   <a href="funct_1.html#NM1">Function</a><b> such that </b><a NAME="E2:65"/><i><font color="Green">E36</font></i>: 
( <font color="Maroon">f2</font>,<font color="Maroon">g2</font> <a href="pua2mss1.html#R3" target="_self">form_morphism_between</a> <font color="Maroon">S3</font>,<font color="Maroon">S2</font> &amp;  <a href="relat_1.html#K2">rng</a> <font color="Maroon">f2</font> <a href="hidden.html#R1">=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">S2</font> &amp;  <a href="relat_1.html#K2">rng</a> <font color="Maroon">g2</font> <a href="hidden.html#R1">=</a> the <a href="msualg_1.html#U1">OperSymbols</a> of <font color="Maroon">S2</font> )
 ; <i><font color="Red">:: according to </font></i><a class="ref" href="pua2mss1.html#D14" target="_self">PUA2MSS1:def 14</a><br/>

<b>take </b><font color="Maroon">f</font> = <font color="Maroon">f1</font> <a href="funct_1.html#NK3" target="_self">*</a> <font color="Maroon">f2</font>; <i><font color="Red">:: according to </font></i><a class="ref" href="pua2mss1.html#D14" target="_self">PUA2MSS1:def 14</a><br/>

<b>take </b><font color="Maroon">g</font> = <font color="Maroon">g1</font> <a href="funct_1.html#NK3" target="_self">*</a> <font color="Maroon">g2</font>;<br/>

<b>thus </b><a NAME="E3:65"/>
<font color="Maroon">f</font>,<font color="Maroon">g</font> <a href="pua2mss1.html#R3" target="_self">form_morphism_between</a> <font color="Maroon">S3</font>,<font color="Maroon">S1</font>
 <b>by </b><i><a class="ref" href="pua2mss1.html#T1" target="_self">Th1</a>, , </i>;<br/>

<a NAME="E4:65"/>
(  <a href="relat_1.html#K1">dom</a> <font color="Maroon">f1</font> <a href="hidden.html#R1">=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">S2</font> &amp;  <a href="relat_1.html#K1">dom</a> <font color="Maroon">g1</font> <a href="hidden.html#R1">=</a> the <a href="msualg_1.html#U1">OperSymbols</a> of <font color="Maroon">S2</font> )
 
<b>by </b><i><a class="ref" href="pua2mss1.html#T1" target="_self">Th1</a>, <a class="txt" href="pua2mss1.html#E2:65"><i><font color="Green">E36</font></i></a></i>;<br/>
<b>hence </b><a NAME="E5:65"/>
(  <a href="relat_1.html#K2">rng</a> <font color="Maroon">f</font> <a href="hidden.html#R1">=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">S1</font> &amp;  <a href="relat_1.html#K2">rng</a> <font color="Maroon">g</font> <a href="hidden.html#R1">=</a> the <a href="msualg_1.html#U1">OperSymbols</a> of <font color="Maroon">S1</font> )
 <b>by </b><i><a class="ref" href="pua2mss1.html#T1" target="_self">Th1</a>, , <a class="ref" href="relat_1.html#T47">RELAT_1:47</a></i>;<br/>


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