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<a NAME="E1:27_1_1"/>
 <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  <a href="srings_2.html#K1" title="SRINGS_2:func.1">sring4_8</a> 
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="enumset1.html#D6" onmouseover="rs('enumset1/D6')" onmouseout="rh()">ENUMSET1:def 6</a></span>;<br/>
<span class="kw">hence </span><a NAME="E2:27_1_1"/>
 not  <a href="srings_2.html#K1" title="SRINGS_2:func.1">sring4_8</a>  is  <a href="setfam_1.html#V1" title="SETFAM_1:attr.1">with_non-empty_elements</a> 
 ; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> verum</span><br/>


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