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

<span class="kw">consider </span><font color="Maroon" title="c2">D</font> being  non  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>   <a href="armstrng.html#NV4" title="ARMSTRNG:NV.4">(F2)</a>   <a href="armstrng.html#V3" title="ARMSTRNG:attr.3">(F1)</a>   <a href="armstrng.html#V4" title="ARMSTRNG:attr.4">(F3)</a>   <a href="armstrng.html#V5" title="ARMSTRNG:attr.5">(F4)</a>  <a href="armstrng.html#NM2" title="ARMSTRNG:NM.2">Dependency-set</a> of <font color="Maroon" title="c1">X</font>;<br/>
<span class="kw">take </span>
<font color="Maroon" title="c2">D</font>
; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="Red">::  thesis: </font></span></a><span class="hide"> <font color="Maroon" title="c2">D</font> is  <a href="armstrng.html#V6" title="ARMSTRNG:attr.6">full_family</a> </span><br/>

<span class="kw">thus </span><a NAME="E2:57_1_1"/>
<font color="Maroon" title="c2">D</font> is  <a href="armstrng.html#V6" title="ARMSTRNG:attr.6">full_family</a> 
 <span class="kw">by</span> <span class="lab"><a class="ref" href="armstrng.html#D15" target="_self" title="ARMSTRNG:def.15">Def15</a></span>; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="Red">::  thesis: </font></span></a><span class="hide"> verum</span><br/>


</div>
