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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E39">Th80</font></span>: <a NAME="T32"><span class="comment"><font color="firebrick">:: GRZLOG_1:32</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">t</font>, <font color="Olive" title="b2">u</font> being   <a href="grzlog_1.html#NM2" title="GRZLOG_1:NM.2">GRZ-formula</a> holds <br/> ( <font color="Olive" title="b1">t</font> <a href="grzlog_1.html#R4" title="GRZLOG_1:pred.4">LD-=</a> <font color="Olive" title="b2">u</font> iff  <a href="grzlog_1.html#K34" title="GRZLOG_1:func.34">LD-EqClassOf</a> <font color="Olive" title="b1">t</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="grzlog_1.html#K34" title="GRZLOG_1:func.34">LD-EqClassOf</a> <font color="Olive" title="b2">u</font> )</div></div>
