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<b>thus </b><a NAME="E1:87_3_2"/>
 ex <font color="Olive">C'</font> being <a href="altcat_1.html#V6">strict</a> <a href="yellow18.html#V4" target="_self">concrete</a> <a href="altcat_1.html#NM4">category</a> st <br/>( the <a href="struct_0.html#U1">carrier</a> of <font color="Olive">C'</font> <a href="hidden.html#R1">=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">C</font> &amp; ( for <font color="Olive">a</font> being  <a href="altcat_1.html#NM1">object</a> of <font color="Olive">C'</font><br/> for <font color="Olive">x</font> being   <a href="hidden.html#M1">set</a>  holds <br/> ( <font color="Olive">x</font> <a href="hidden.html#R2">in</a>  <a href="yellow18.html#K3" target="_self">the_carrier_of</a> <font color="Olive">a</font> iff ( <font color="Olive">x</font> <a href="hidden.html#R2">in</a> <font color="Maroon">H<sub>1</sub></font>(<font color="Olive">a</font>) &amp; <font color="Maroon">S<sub>1</sub></font>[<font color="Olive">a</font>,<font color="Olive">x</font>] ) ) ) &amp; ( for <font color="Olive">a</font>, <font color="Olive">b</font> being  <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">C</font><br/> for <font color="Olive">f</font> being  <a href="funct_1.html#NM1">Function</a> holds <br/> ( <font color="Olive">f</font> <a href="hidden.html#R2">in</a> the <a href="altcat_1.html#U1">Arrows</a> of <font color="Olive">C'</font> <a href="binop_1.html#K1">.</a> <font color="Olive">a</font>,<font color="Olive">b</font> iff ( <font color="Olive">f</font> <a href="hidden.html#R2">in</a>  <a href="funct_2.html#K1">Funcs</a> <span class="p1">(<span class="default"><font color="Olive">C'</font> <a href="yellow18.html#K3" target="_self">-carrier_of</a> <font color="Olive">a</font></span>)</span>,<span class="p1">(<span class="default"><font color="Olive">C'</font> <a href="yellow18.html#K3" target="_self">-carrier_of</a> <font color="Olive">b</font></span>)</span> &amp; <font color="Maroon">S<sub>2</sub></font>[<font color="Olive">a</font>,<font color="Olive">b</font>,<font color="Olive">f</font>] ) ) ) )
 <b>from </b><i><a class="ref" href="yellow18.html#S18" target="_self">YELLOW18:sch 18</a>(, );</i><br/>


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