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<div><span class="kw">theorem </span><a NAME="T25"><span class="comment"><font color="firebrick">:: DICKSON:25</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">R</font> being    <a href="orders_2.html#L1" title="ORDERS_2:struct.1">RelStr</a>  holds   <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  <a href="dickson.html#R1" title="DICKSON:pred.1">is_Dickson-basis_of</a>  <a href="subset_1.html#K1" title="SUBSET_1:func.1">{}</a>  the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <font color="Olive" title="b1">R</font>,<font color="Olive" title="b1">R</font> ;<br/></div></div>
