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<b>let </b><font color="Maroon" title="c1">UN</font> be   <a href="classes2.html#NM1" title="CLASSES2:NM.1">Universe</a>;<br/><b>let </b><font color="Maroon" title="c2">R</font> be   <a href="funcsdom.html#NM1" title="FUNCSDOM:NM.1">Ring</a>;<br/>



<b>set </b><font color="Maroon" title="c3">C</font> =  <a href="modcat_1.html#K12" title="MODCAT_1:func.12">LModCat</a> <font color="Maroon" title="c1">UN</font>,<font color="Maroon" title="c2">R</font>;<br/>
<b>set </b><font color="Maroon" title="c4">V</font> =  <a href="modcat_1.html#K3" title="MODCAT_1:func.3">LModObjects</a> <font color="Maroon" title="c1">UN</font>,<font color="Maroon" title="c2">R</font>;<br/>
<b>let </b><font color="Maroon" title="c5">b</font> be   <a href="cat_1.html#NM1" title="CAT_1:NM.1">Object</a> of <span class="p1">(<span class="default"><a href="modcat_1.html#K12" title="MODCAT_1:func.12">LModCat</a> <font color="Maroon" title="c1">UN</font>,<font color="Maroon" title="c2">R</font></span>)</span>;<br/><b>let </b><font color="Maroon" title="c6">b'</font> be    <a href="modcat_1.html#M2" title="MODCAT_1:mode.2">Element</a> of  <a href="modcat_1.html#K3" title="MODCAT_1:func.3">LModObjects</a> <font color="Maroon" title="c1">UN</font>,<font color="Maroon" title="c2">R</font>;<br/>



<b>assume </b><a NAME="E1:33"/>
<font color="Maroon" title="c5">b</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c6">b'</font>
 ;<br/>

<b>hence </b> <a href="cat_1.html#K5" title="CAT_1:func.5">id</a> <font color="Maroon" title="c5">b</font> = 
<span class="p1">(<span class="default"><a href="modcat_1.html#K10" title="MODCAT_1:func.10">ID</a> <span class="p2">(<span class="default"><a href="modcat_1.html#K3" title="MODCAT_1:func.3">LModObjects</a> <font color="Maroon" title="c1">UN</font>,<font color="Maroon" title="c2">R</font></span>)</span></span>)</span> <a href="funct_2.html#K3" title="FUNCT_2:func.3">.</a> <font color="Maroon" title="c6">b'</font>
<b>by </b><i><a class="ref" href="cat_1.html#D5" title="CAT_1:def.5">CAT_1:def 5</a></i>
<br/>.= 
 <a href="modcat_1.html#K7" title="MODCAT_1:func.7">ID</a> <font color="Maroon" title="c6">b'</font>
<b>by </b><i><a class="ref" href="modcat_1.html#D13" target="_self" title="MODCAT_1:def.13">Def13</a></i>
;<br/><br/>


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