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<div><span class="kw">theorem </span><a NAME="T69"><span class="comment"><font color="firebrick">:: FOMODEL0:69</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">x</font> being    <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a> <br/>  for <font color="Olive" title="b2">f</font> being   <a href="funct_1.html#NM1" title="FUNCT_1:NM.1">Function</a> holds <br/> ( <font color="Olive" title="b1">x</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  <a href="fomodel0.html#K32" title="FOMODEL0:func.32">fixpoints</a> <font color="Olive" title="b2">f</font> iff <font color="Olive" title="b1">x</font> <a href="abian.html#R1" title="ABIAN:pred.1">is_a_fixpoint_of</a> <font color="Olive" title="b2">f</font> ) <span class="kw">by</span> <span class="lab"><a class="txt" href="fomodel0.html#E182"><span class="lab"><font color="Green" title="E116">Lm78</font></span></a></span>;<br/></div></div>
