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<span class="kw">set </span><font color="Maroon" title="c3">f</font> = <font color="Maroon" title="c1">U</font> <a href="monoid_0.html#K11" title="MONOID_0:func.11">-concatenation</a> ;<br/>
<a NAME="E1:38_1_1"/>
<font color="Maroon" title="c2">e</font> <a href="subset_1.html#K9" title="SUBSET_1:func.9">/\</a> <span class="p1">(<span class="default"><font color="Maroon" title="c1">U</font> <a href="monoid_0.html#K11" title="MONOID_0:func.11">-concatenation</a></span>)</span> is <font color="Maroon" title="c1">U</font> <a href="monoid_0.html#K11" title="MONOID_0:func.11">-concatenation</a>  <a href="fomodel0.html#V2" title="FOMODEL0:attr.2">-unambiguous</a> 
 
;<br/>
<span class="kw">hence </span><a NAME="E2:38_1_1"/>
<font color="Maroon" title="c2">e</font> <a href="xboole_0.html#K3" title="XBOOLE_0:func.3">/\</a> <font color="Maroon" title="c1">U</font> is <font color="Maroon" title="c1">U</font> <a href="fomodel0.html#V3" title="FOMODEL0:attr.3">-prefix</a> 
 <span class="kw">by</span> <span class="lab"><a class="ref" href="fomodel0.html#D3" target="_self" title="FOMODEL0:def.3">DefPrefix</a></span>; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> verum</span><br/>


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