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<b>let </b><font color="Maroon" title="c2">f</font> be    <a href="subset_1.html#M1" title="SUBSET_1:mode.1">Element</a> of  <a href="bvfunc_1.html#K1" title="BVFUNC_1:func.1">BVF</a> <font color="Maroon" title="c1">Y</font>;<br/>

<b>thus </b><a NAME="E1:5_1_1"/>
 <a href="relat_1.html#K2" title="RELAT_1:func.2">rng</a> <font color="Maroon" title="c2">f</font> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a>  <a href="margrel1.html#K6" title="MARGREL1:func.6">BOOLEAN</a> 
 <b>by </b><i><a class="ref" href="funct_2.html#T169" title="FUNCT_2:th.169">FUNCT_2:169</a></i>; <i><font color="Red">:: according to </font></i><a class="ref" href="margrel1.html#D17" title="MARGREL1:def.17">MARGREL1:def 17</a><br/>


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