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<b>let </b><font color="Maroon">C</font> be  non <a href="xboole_0.html#V1">empty</a>  <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">f</font> be    <a href="fuzzy_1.html#M1" target="_self">Membership_Func</a> of <font color="Maroon">C</font>;<br/><b>let </b><font color="Maroon">g</font> be    <a href="fuzzy_1.html#M1" target="_self">Membership_Func</a> of <font color="Maroon">C</font>;<br/>





<a NAME="E1:44"/>
(  <a href="fuzzy_1.html#K3" target="_self">1_minus</a> <span class="p1">(<span class="default"><a href="fuzzy_1.html#K3" target="_self">1_minus</a> <font color="Maroon">f</font></span>)</span> <a href="hidden.html#R1">=</a> <font color="Maroon">f</font> &amp;  <a href="fuzzy_1.html#K3" target="_self">1_minus</a> <span class="p1">(<span class="default"><a href="fuzzy_1.html#K3" target="_self">1_minus</a> <font color="Maroon">g</font></span>)</span> <a href="hidden.html#R1">=</a> <font color="Maroon">g</font> )
 
;<br/>
<b>hence </b><a NAME="E2:44"/>
(  <a href="fuzzy_1.html#K3" target="_self">1_minus</a> <font color="Maroon">g</font> <a href="fuzzy_1.html#NR2" target="_self">c=</a>  implies  <a href="fuzzy_1.html#K3" target="_self">1_minus</a> <font color="Maroon">f</font> <a href="fuzzy_1.html#NR2" target="_self">c=</a>  )
 <b>by </b><i><a class="ref" href="fuzzy_1.html#T2" target="_self">Th2</a></i>;<br/>


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