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<div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="13_1_1_1"><b>per </b></a><a class="txt" onclick="hs(this)" href="javascript:()"><b>cases </b></a><span class="hide"><a NAME="E1:13_1_1_1"/>
(  not <font color="Maroon">L</font> is <a href="struct_0.html#V3">empty</a> or <font color="Maroon">L</font> is <a href="struct_0.html#V3">empty</a> )
 </span>;<br/><div class="add"><div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="13_1_1_1_1"><b>suppose </b></a><a NAME="E1:13_1_1_1_1"/><i><font color="Green">E32</font></i>: 
not <font color="Maroon">L</font> is <a href="struct_0.html#V3">empty</a>
 ;<br/><div class="add"><a NAME="E2:13_1_1_1_1"/><i><font color="Green">E35</font></i>: 
 <a href="grcat_1.html#K7">id</a> <font color="Maroon">L</font> <a href="hidden.html#R1">=</a>  <a href="partfun1.html#K6">id</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">L</font>
 <b>by </b><i><a class="ref" href="grcat_1.html#D11">GRCAT_1:def 11</a></i>;<br/><a NAME="E3:13_1_1_1_1"/><i><font color="Green">E45</font></i>: 
 <a href="grcat_1.html#K7">id</a> <font color="Maroon">L</font> is <a href="orders_3.html#V5">monotone</a>
 <b>by </b><i>, <a class="ref" href="yellow_2.html#T13">YELLOW_2:13</a></i>;<br/><a NAME="E4:13_1_1_1_1"/>
 <a href="grcat_1.html#K7">id</a> <font color="Maroon">L</font> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><a href="grcat_1.html#K7">id</a> <font color="Maroon">L</font></span>)</span> <a href="funct_1.html#K2">"</a> 
 <b>by </b><i>, <a class="ref" href="funct_1.html#T67">FUNCT_1:67</a></i>;<br/><b>hence </b><a NAME="E5:13_1_1_1_1"/>
 <a href="grcat_1.html#K7">id</a> <font color="Maroon">L</font> is <a href="waybel_0.html#V23">isomorphic</a>
 <b>by </b><i>, , , <a class="ref" href="waybel_0.html#D38">WAYBEL_0:def 38</a></i>;<br/></div><b>end;</b></div><div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="13_1_1_1_2"><b>suppose </b></a><a NAME="E1:13_1_1_1_2"/>
<font color="Maroon">L</font> is <a href="struct_0.html#V3">empty</a>
 ;<br/><div class="add"><b>hence </b><a NAME="E2:13_1_1_1_2"/>
 <a href="grcat_1.html#K7">id</a> <font color="Maroon">L</font> is <a href="waybel_0.html#V23">isomorphic</a>
 <b>by </b><i><a class="ref" href="waybel_0.html#D38">WAYBEL_0:def 38</a></i>;<br/></div><b>end;</b></div></div><b>end;</b></div>

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