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<div><span class="kw">theorem </span><a NAME="T50"><span class="comment"><font color="firebrick">:: GRZLOG_1:50</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="grzlog_1.html#NM6" title="GRZLOG_1:NM.6">LD-EqClass</a>  st <font color="Olive" title="b1">x</font> is  <a href="grzlog_1.html#V11" title="GRZLOG_1:attr.11">LD-provable</a>  holds <br/><font color="Olive" title="b1">x</font> <a href="grzlog_1.html#K38" title="GRZLOG_1:func.38">'or'</a> <font color="Olive" title="b2">y</font> is  <a href="grzlog_1.html#V11" title="GRZLOG_1:attr.11">LD-provable</a> </div></div>
