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<b>let </b><font color="Maroon">X</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">f</font> be  <a href="cohsp_1.html#V6">V169</a> <a href="funct_2.html#NM1">Function</a> of  <a href="zfmisc_1.html#K1">bool</a> <font color="Maroon">X</font>, <a href="zfmisc_1.html#K1">bool</a> <font color="Maroon">X</font>;<br/><b>let </b><font color="Maroon">S</font> be   <a href="subset_1.html#NM2">Subset</a> of <font color="Maroon">X</font>;<br/>





<b>assume </b><a NAME="E1:12"/>
<font color="Maroon">S</font> <a href="hidden.html#R1">=</a> <font color="Maroon">f</font> <a href="funct_2.html#K3">.</a> <font color="Maroon">S</font>
 ; <i><font color="Red">:: according to </font></i><a class="ref" href="abian.html#D4">ABIAN:def 4</a><br/>

<b>hence </b><a NAME="E2:12"/>
(  <a href="knaster.html#K1" target="_self">lfp</a> <font color="Maroon">X</font>,<font color="Maroon">f</font> <a href="tarski.html#R1">c=</a> <font color="Maroon">S</font> &amp; <font color="Maroon">S</font> <a href="tarski.html#R1">c=</a>  <a href="knaster.html#K2" target="_self">gfp</a> <font color="Maroon">X</font>,<font color="Maroon">f</font> )
 <b>by </b><i>, </i>;<br/>


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