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<div><span class="kw">theorem </span><a NAME="T54"><span class="comment"><font color="firebrick">:: SRINGS_5:54</font></span><br/></a><div class="add"> <a href="srings_5.html#K17" title="SRINGS_5:func.17">the_set_of_all_open_real_bounded_intervals</a>  <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a> <span class="p1"> { <span class="default"> <font color="Olive" title="b1">I</font> where <font color="Olive" title="b1">I</font> is   <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <a href="numbers.html#K1" title="NUMBERS:func.1">REAL</a> : <font color="Olive" title="b1">I</font> is  <a href="measure5.html#V1" title="MEASURE5:attr.1">open_interval</a>  </span> } </span> </div></div>
