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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E16">Th14</font></span>: <a NAME="T14"><span class="comment"><font color="firebrick">:: RFUNCT_3:14</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">D</font> being   non  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>   <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a>  holds   <a href="rfunct_3.html#K13" title="RFUNCT_3:func.13">addpfunc</a> <font color="Olive" title="b1">D</font> is  <a href="binop_1.html#V1" title="BINOP_1:attr.1">commutative</a> </div></div>
