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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E50">Th48</font></span>: <a NAME="T50"><span class="comment"><font color="firebrick">:: INTEGRA1:50</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">X</font>, <font color="Olive" title="b2">Y</font> being   <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> holds  <span class="p1">(<span class="default"><a href="measure6.html#K3" title="MEASURE6:func.3">--</a> <font color="Olive" title="b1">X</font></span>)</span> <a href="member_1.html#K9" title="MEMBER_1:func.9">++</a> <span class="p1">(<span class="default"><a href="measure6.html#K3" title="MEASURE6:func.3">--</a> <font color="Olive" title="b2">Y</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="member_1.html#K5" title="MEMBER_1:func.5">--</a> <span class="p1">(<span class="default"><font color="Olive" title="b1">X</font> <a href="member_1.html#K9" title="MEMBER_1:func.9">++</a> <font color="Olive" title="b2">Y</font></span>)</span></div></div>
