<?xml version="1.0"?>
<div class="add">

<a NAME="E1:3_1_1"/>
(  <a href="struct_0.html#G5" title="STRUCT_0:aggr.5">2-sorted</a>(# <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>,<a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> #) is  <a href="struct_0.html#V2" title="STRUCT_0:attr.2">empty</a>  &amp;  <a href="struct_0.html#G5" title="STRUCT_0:aggr.5">2-sorted</a>(# <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>,<a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> #) is  <a href="struct_0.html#V11" title="STRUCT_0:attr.11">void</a>  &amp;  <a href="struct_0.html#G5" title="STRUCT_0:aggr.5">2-sorted</a>(# <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>,<a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> #) is  <a href="conlat_1.html#V1" title="CONLAT_1:attr.1">quasi-empty</a>  )
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="conlat_1.html#D1" target="_self" title="CONLAT_1:def.1">Def2</a></span>;<br/>
<span class="kw">hence </span><a NAME="E2:3_1_1"/>
 ex <font color="Olive">b<sub>1</sub></font> being    <a href="struct_0.html#L5" title="STRUCT_0:struct.5">2-sorted</a>  st <br/>( <font color="Olive">b<sub>1</sub></font> is  <a href="struct_0.html#V10" title="STRUCT_0:attr.10">strict</a>  &amp; <font color="Olive">b<sub>1</sub></font> is  <a href="struct_0.html#V2" title="STRUCT_0:attr.2">empty</a>  &amp; <font color="Olive">b<sub>1</sub></font> is  <a href="struct_0.html#V11" title="STRUCT_0:attr.11">void</a>  &amp; <font color="Olive">b<sub>1</sub></font> is  <a href="conlat_1.html#V1" title="CONLAT_1:attr.1">quasi-empty</a>  )
 ; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> verum</span><br/>


</div>
