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<b>let </b><font color="Maroon" title="c1">G</font> be  non <a href="struct_0.html#V2" title="STRUCT_0:attr.2">empty</a>  <a href="lang1.html#L1" title="LANG1:struct.1">DTConstrStr</a> ;<br/><b>let </b><font color="Maroon" title="c2">s</font> be   <a href="lang1.html#NM1" title="LANG1:NM.1">Symbol</a> of <font color="Maroon" title="c1">G</font>;<br/><b>let </b><font color="Maroon" title="c3">n</font> be   <a href="lang1.html#NM2" title="LANG1:NM.2">String</a> of <font color="Maroon" title="c1">G</font>;<br/>





<b>assume </b><a NAME="E1:15"/><i><font color="Green" title="E3">A1</font></i>: 
<font color="Maroon" title="c2">s</font> <a href="lang1.html#R1" title="LANG1:pred.1">==&gt;</a> <font color="Maroon" title="c3">n</font>
 ;<br/>

<b>take </b><font color="Maroon" title="c4">n1</font> =  <a href="lang1.html#K2" title="LANG1:func.2">&lt;*&gt;</a> the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <font color="Maroon" title="c1">G</font>; <i><font color="Red">:: according to </font></i><a class="ref" href="lang1.html#D4" target="_self" title="LANG1:def.4">LANG1:def 4</a><br/>

<b>take </b><font color="Maroon" title="c5">n2</font> =  <a href="lang1.html#K2" title="LANG1:func.2">&lt;*&gt;</a> the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <font color="Maroon" title="c1">G</font>;<br/>

<b>take </b><font color="Maroon" title="c6">n3</font> = <font color="Maroon" title="c3">n</font>;<br/>

<b>take </b>
<font color="Maroon" title="c2">s</font>
;<br/>

<b>thus </b><span class="p1"><a href="lang1.html#K3" title="LANG1:func.3">&lt;*</a><span class="default"><font color="Maroon" title="c2">s</font></span><a href="lang1.html#K3" title="LANG1:func.3">*&gt;</a></span> = 
<font color="Maroon" title="c4">n1</font> <a href="lang1.html#K1" title="LANG1:func.1">^</a> <span class="p1"><a href="lang1.html#K3" title="LANG1:func.3">&lt;*</a><span class="default"><font color="Maroon" title="c2">s</font></span><a href="lang1.html#K3" title="LANG1:func.3">*&gt;</a></span>
<b>by </b><i><a class="ref" href="finseq_1.html#T47" title="FINSEQ_1:th.47">FINSEQ_1:47</a></i>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon" title="c4">n1</font> <a href="lang1.html#K1" title="LANG1:func.1">^</a> <span class="p2"><a href="lang1.html#K3" title="LANG1:func.3">&lt;*</a><span class="default"><font color="Maroon" title="c2">s</font></span><a href="lang1.html#K3" title="LANG1:func.3">*&gt;</a></span></span>)</span> <a href="lang1.html#K1" title="LANG1:func.1">^</a> <font color="Maroon" title="c5">n2</font>
<b>by </b><i><a class="ref" href="finseq_1.html#T47" title="FINSEQ_1:th.47">FINSEQ_1:47</a></i>
;<br/>

<b>thus </b><font color="Maroon" title="c3">n</font> = 
<font color="Maroon" title="c4">n1</font> <a href="lang1.html#K1" title="LANG1:func.1">^</a> <font color="Maroon" title="c6">n3</font>
<b>by </b><i><a class="ref" href="finseq_1.html#T47" title="FINSEQ_1:th.47">FINSEQ_1:47</a></i>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon" title="c4">n1</font> <a href="lang1.html#K1" title="LANG1:func.1">^</a> <font color="Maroon" title="c6">n3</font></span>)</span> <a href="lang1.html#K1" title="LANG1:func.1">^</a> <font color="Maroon" title="c5">n2</font>
<b>by </b><i><a class="ref" href="finseq_1.html#T47" title="FINSEQ_1:th.47">FINSEQ_1:47</a></i>
;<br/>

<b>thus </b><a NAME="E4:15"/>
<font color="Maroon" title="c2">s</font> <a href="lang1.html#R1" title="LANG1:pred.1">==&gt;</a> <font color="Maroon" title="c6">n3</font>
 <b>by </b><i><a class="txt" href="lang1.html#E1:15"><i><font color="Green" title="E3">A1</font></i></a></i>;<br/>


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