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<b>let </b><font color="Maroon">f</font> be   <a href="funct_1.html#NM1">Function</a>;<br/>

<b>assume </b><a NAME="E1:5_1_1"/><i><font color="Green">E52</font></i>: 
<font color="Maroon">f</font> is <a href="matrlin.html#V1">FinSequence-yielding</a>
 ;<br/>

<b>let </b><font color="Maroon">x</font> be    <a href="hidden.html#M1">set</a> ; <i><font color="Red">:: according to </font></i><a class="ref" href="funcop_1.html#D6">FUNCOP_1:def 6</a><br/>

<b>thus </b><a NAME="E2:5_1_1"/>
(  not <font color="Maroon">x</font> <a href="hidden.html#R2">in</a>  <a href="relat_1.html#K1">dom</a> <font color="Maroon">f</font> or <font color="Maroon">f</font> <a href="funct_1.html#K1">.</a> <font color="Maroon">x</font> is    <a href="hidden.html#M1">set</a>  )
 <b>by </b><i>, <a class="ref" href="matrlin.html#D1">MATRLIN:def 1</a></i>;<br/>


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