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

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( ( for <font color="Olive">x</font> being   <a href="hidden.html#M1">set</a>   st <font color="Olive">x</font> <a href="hidden.html#R2">in</a> <span class="p1">(<span class="default"><a href="relat_1.html#K1">dom</a> <font color="Maroon">f</font></span>)</span> <a href="xboole_0.html#K3">/\</a> <span class="p1">(<span class="default"><a href="relat_1.html#K1">dom</a> <font color="Maroon">g</font></span>)</span> holds <br/><font color="Maroon">f</font> <a href="funct_1.html#K1">.</a> <font color="Olive">x</font> <a href="hidden.html#R1">=</a> <font color="Maroon">g</font> <a href="funct_1.html#K1">.</a> <font color="Olive">x</font> ) iff  ex <font color="Olive">h</font> being  <a href="funct_1.html#NM1">Function</a> st <font color="Maroon">f</font> <a href="xboole_0.html#K2">\/</a> <font color="Maroon">g</font> <a href="hidden.html#R1">=</a> <font color="Olive">h</font> )
 
<b>by </b><i>, </i>;<br/>
<b>hence </b><a NAME="E2:90"/>
( <font color="Maroon">f</font> <a href="partfun1.html#R1" target="_self">tolerates</a> <font color="Maroon">g</font> iff  ex <font color="Olive">h</font> being  <a href="funct_1.html#NM1">Function</a> st <font color="Maroon">f</font> <a href="xboole_0.html#K2">\/</a> <font color="Maroon">g</font> <a href="hidden.html#R1">=</a> <font color="Olive">h</font> )
 <b>by </b><i/>;<br/>


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