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<div><span class="kw">theorem </span><a NAME="T150"><span class="comment"><font color="firebrick">:: ABSRED_0:150</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">X</font> being    <a href="absred_0.html#L1" title="ABSRED_0:struct.1">ARS</a>  holds <br/> ( <font color="Olive" title="b1">X</font> is  <a href="absred_0.html#V9" title="ABSRED_0:attr.9">DIAMOND</a>  iff  the <a href="absred_0.html#U1" title="ABSRED_0:sel.1">reduction</a> of <font color="Olive" title="b1">X</font> is  <a href="rewrite1.html#V6" title="REWRITE1:attr.6">subcommutative</a>  )</div></div>
