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<b>set </b><font color="Maroon" title="c1">L</font> =  <a href="lattice3.html#K1" title="LATTICE3:func.1">BooleLatt</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> ;<br/>
<a NAME="E1:1_1_1"/><i><font color="Green" title="E1">A1</font></i>: 
the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <span class="p1">(<span class="default"><a href="lattice3.html#K1" title="LATTICE3:func.1">BooleLatt</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> </span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="zfmisc_1.html#K1" title="ZFMISC_1:func.1">bool</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> 
 
<b>by </b><i><a class="ref" href="lattice3.html#D1" title="LATTICE3:def.1">LATTICE3:def 1</a></i>;<br/>
<a NAME="E2:1_1_1"/>
 <a href="zfmisc_1.html#K1" title="ZFMISC_1:func.1">bool</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  is <a href="finset_1.html#V1" title="FINSET_1:attr.1">finite</a>
 
<b>by </b><i><a class="ref" href="finset_1.html#T24" title="FINSET_1:th.24">FINSET_1:24</a></i>;<br/>
<a NAME="E3:1_1_1"/><b>then </b>
 <a href="lattice3.html#K1" title="LATTICE3:func.1">BooleLatt</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  is <a href="group_1.html#V6" title="GROUP_1:attr.6">finite</a>
 
<b>by </b><i><a class="txt" href="lattice6.html#E1:1_1_1"><i><font color="Green" title="E1">A1</font></i></a>, <a class="ref" href="group_1.html#D14" title="GROUP_1:def.14">GROUP_1:def 14</a></i>;<br/>
<b>hence </b><a NAME="E4:1_1_1"/>
 ex <font color="Olive">b<sub>1</sub></font> being  <a href="lattices.html#NM1" title="LATTICES:NM.1">Lattice</a> st <font color="Olive">b<sub>1</sub></font> is <a href="group_1.html#V6" title="GROUP_1:attr.6">finite</a>
 ;<br/>


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