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<b>let </b><font color="Maroon">c<sub>1</sub></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">c<sub>2</sub></font>, <font color="Maroon">c<sub>3</sub></font> be   <a href="fuzzy_3.html#NM1">RMembership_Func</a> of <font color="Maroon">c<sub>1</sub></font>,<font color="Maroon">c<sub>1</sub></font>;<br/>



<b>assume </b><a NAME="E1:23"/>
( <font color="Maroon">c<sub>2</sub></font> is <a href="lfuzzy_1.html#V2" target="_self">symmetric</a> &amp; <font color="Maroon">c<sub>3</sub></font> is <a href="lfuzzy_1.html#V2" target="_self">symmetric</a> )
 ;<br/>

<a NAME="E2:23"/><b>then </b>
(  <a href="fuzzy_4.html#K1">converse</a> <font color="Maroon">c<sub>2</sub></font> <a href="hidden.html#R1">=</a> <font color="Maroon">c<sub>2</sub></font> &amp;  <a href="fuzzy_4.html#K1">converse</a> <font color="Maroon">c<sub>3</sub></font> <a href="hidden.html#R1">=</a> <font color="Maroon">c<sub>3</sub></font> )
 
<b>by </b><i><a class="ref" href="lfuzzy_1.html#D4" target="_self">Def4</a></i>;<br/>
<b>hence </b><a NAME="E3:23"/>
 <a href="fuzzy_4.html#K1">converse</a> <span class="p1">(<span class="default"><a href="lfuzzy_1.html#K2" target="_self">max</a> <font color="Maroon">c<sub>2</sub></font>,<font color="Maroon">c<sub>3</sub></font></span>)</span> <a href="hidden.html#R1">=</a>  <a href="lfuzzy_1.html#K2" target="_self">max</a> <font color="Maroon">c<sub>2</sub></font>,<font color="Maroon">c<sub>3</sub></font>
 <b>by </b><i><a class="ref" href="fuzzy_4.html#T7">FUZZY_4:7</a></i>;<br/>


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