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<b>consider </b><font color="Maroon">A</font> being  non <a href="xboole_0.html#V1">empty</a>  <a href="hidden.html#M1">set</a> ;<br/>
<b>take </b>
 <a href="catalg_1.html#K3" target="_self">CatSign</a> <font color="Maroon">A</font>
;<br/>

<b>thus </b><a NAME="E2:40_1_1"/>
(  <a href="catalg_1.html#K3" target="_self">CatSign</a> <font color="Maroon">A</font> is <a href="catalg_1.html#V3" target="_self">delta-concrete</a> &amp; not  <a href="catalg_1.html#K3" target="_self">CatSign</a> <font color="Maroon">A</font> is <a href="struct_0.html#V3">empty</a> &amp;  <a href="catalg_1.html#K3" target="_self">CatSign</a> <font color="Maroon">A</font> is <a href="msualg_1.html#V1">strict</a> )
 ;<br/>


</div>
