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

<b>consider </b><font color="Maroon" title="c3">C</font> being  non <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> <a href="realset1.html#V1" title="REALSET1:attr.1">trivial</a> <a href="struct_0.html#NM2" title="STRUCT_0:NM.2">Subset</a> of <font color="Maroon" title="c1">L</font>;<br/>
<b>reconsider </b><font color="Maroon" title="c4">C</font> = <font color="Maroon" title="c3">C</font> as    <a href="waybel35.html#M1" title="WAYBEL35:mode.1">strict_chain</a> of <font color="Maroon" title="c2">R</font> <b>by </b><i><a class="ref" href="waybel35.html#T4" target="_self" title="WAYBEL35:th.4">Th4</a></i>;<br/>
<b>take </b>
<font color="Maroon" title="c4">C</font>
; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> ( not <font color="Maroon" title="c4">C</font> is <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> &amp; <font color="Maroon" title="c4">C</font> is <a href="realset1.html#V1" title="REALSET1:attr.1">trivial</a> )</span><br/>

<b>thus </b><a NAME="E3:21_1_1"/>
( not <font color="Maroon" title="c4">C</font> is <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> &amp; <font color="Maroon" title="c4">C</font> is <a href="realset1.html#V1" title="REALSET1:attr.1">trivial</a> )
 ; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> verum</span><br/>


</div>
