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<div><span class="kw">theorem </span><a NAME="T4"><span class="comment"><font color="firebrick">:: INTERVA1:4</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">U</font> being    <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a> <br/>  for <font color="Olive" title="b2">A</font>, <font color="Olive" title="b3">B</font> being   <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <font color="Olive" title="b1">U</font>  st  <a href="interva1.html#K1" title="INTERVA1:func.1">Inter</a> (<font color="Olive" title="b2">A</font>,<font color="Olive" title="b3">B</font>) <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  holds <br/> not <font color="Olive" title="b2">A</font> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a> <font color="Olive" title="b3">B</font> <span class="kw">by</span> <span class="lab"><a class="ref" href="interva1.html#T1" target="_self" onmouseover="rs('interva1/T1')" onmouseout="rh()">Th1</a></span>;<br/></div></div>
