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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E37">Th20</font></span>: <a NAME="T20"><span class="comment"><font color="firebrick">:: RINGCAT1:20</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">V</font> being   <a href="ringcat1.html#NM3" title="RINGCAT1:NM.3">Ring_DOMAIN</a><br/>  for <font color="Olive" title="b2">g</font>, <font color="Olive" title="b3">f</font> being    <a href="ringcat1.html#M3" title="RINGCAT1:mode.3">Element</a> of  <a href="ringcat1.html#K10" title="RINGCAT1:func.10">Morphs</a> <font color="Olive" title="b1">V</font>  st  <a href="ringcat1.html#K11" title="RINGCAT1:func.11">dom</a> <font color="Olive" title="b2">g</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="ringcat1.html#K12" title="RINGCAT1:func.12">cod</a> <font color="Olive" title="b3">f</font> holds <br/><font color="Olive" title="b2">g</font> <a href="ringcat1.html#K6" title="RINGCAT1:func.6">*</a> <font color="Olive" title="b3">f</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  <a href="ringcat1.html#K10" title="RINGCAT1:func.10">Morphs</a> <font color="Olive" title="b1">V</font></div></div>
