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<a NAME="E1:56_1_1"/>
( <font color="Maroon">T</font> <a href="funct_1.html#K1">.</a> <font color="Maroon">t</font> <a href="hidden.html#R2">in</a>  <a href="relat_1.html#K2">rng</a> <font color="Maroon">T</font> &amp;  <a href="relat_1.html#K2">rng</a> <font color="Maroon">T</font> <a href="tarski.html#R1">c=</a> <font color="Maroon">D</font> )
 
<b>by </b><i>, <a class="ref" href="funct_1.html#D5">FUNCT_1:def 5</a></i>;<br/>
<b>hence </b><a NAME="E2:56_1_1"/>
<font color="Maroon">T</font> <a href="funct_1.html#K1">.</a> <font color="Maroon">t</font> is    <a href="subset_1.html#M1">Element</a> of <font color="Maroon">D</font>
 ;<br/>


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