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<b>let </b><font color="Maroon">C</font> be  non <a href="struct_0.html#V3">empty</a> <a href="altcat_1.html#V12" target="_self">with_units</a>  <a href="altcat_1.html#L2" target="_self">AltCatStr</a> ;<br/><b>let </b><font color="Maroon">o</font> be   <a href="altcat_1.html#NM1">object</a> of <font color="Maroon">C</font>;<br/>



<a NAME="E1:46"/>
the <a href="altcat_1.html#U2" target="_self">Comp</a> of <font color="Maroon">C</font> is <a href="altcat_1.html#V5" target="_self">with_left_units</a>
 
<b>by </b><i/>;<br/>
<b>then consider </b><font color="Maroon">e</font> being    <a href="hidden.html#M1">set</a> <b> such that </b><br/><a NAME="E3:46"/><i><font color="Green">E15</font></i>: 
<font color="Maroon">e</font> <a href="hidden.html#R2">in</a> the <a href="altcat_1.html#U1" target="_self">Arrows</a> of <font color="Maroon">C</font> <a href="binop_1.html#K1">.</a> <font color="Maroon">o</font>,<font color="Maroon">o</font>
 <b>and </b><br/><a NAME="E4:46"/>
for <font color="Olive">o'</font> being  <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">C</font><br/> for <font color="Olive">f</font> being   <a href="hidden.html#M1">set</a>   st <font color="Olive">f</font> <a href="hidden.html#R2">in</a> the <a href="altcat_1.html#U1" target="_self">Arrows</a> of <font color="Maroon">C</font> <a href="binop_1.html#K1">.</a> <font color="Olive">o'</font>,<font color="Maroon">o</font> holds <br/><span class="p1">(<span class="default">the <a href="altcat_1.html#U2" target="_self">Comp</a> of <font color="Maroon">C</font> <a href="altcat_1.html#K4" target="_self">.</a> <font color="Olive">o'</font>,<font color="Maroon">o</font>,<font color="Maroon">o</font></span>)</span> <a href="binop_1.html#K1">.</a> <font color="Maroon">e</font>,<font color="Olive">f</font> <a href="hidden.html#R1">=</a> <font color="Olive">f</font>
 <b>by </b><i><a class="txt" href="altcat_1.html#E3:46"><i><font color="Green">E15</font></i></a></i>;<br/>
<b>thus </b><a NAME="E5:46"/>
<span class="p1"><a href="altcat_1.html#K1" target="_self">&lt;^</a><span class="default"><font color="Maroon">o</font>,<font color="Maroon">o</font></span><a href="altcat_1.html#K1" target="_self">^&gt;</a></span> <a href="hidden.html#NR2" target="_self">&lt;&gt;</a>  <a href="xboole_0.html#K1">{}</a> 
 <b>by </b><i/>;<br/>


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