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<div><span class="kw">theorem </span><a NAME="T8"><span class="comment"><font color="firebrick">:: CARD_3:8</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">x</font> being    <a href="hidden.html#M1" title="HIDDEN:mode.1">object</a> <br/>  for <font color="Olive" title="b2">Y</font> being    <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a>  holds   <a href="card_3.html#K3" title="CARD_3:func.3">Union</a> <span class="p1">(<span class="default"><font color="Olive" title="b1">x</font> <a href="funcop_1.html#K17" title="FUNCOP_1:func.17">.--&gt;</a> <font color="Olive" title="b2">Y</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Olive" title="b2">Y</font> <span class="kw">by</span> <span class="lab"><a class="ref" href="card_3.html#T7" target="_self" onmouseover="rs('card_3/T7')" onmouseout="rh()">Th7</a></span>;<br/></div></div>
