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<b>reconsider </b><font color="Maroon">c<sub>5</sub></font> = the <a href="msualg_1.html#U4">Sorts</a> of <font color="Maroon">c<sub>3</sub></font>, <font color="Maroon">c<sub>6</sub></font> = the <a href="msualg_1.html#U4">Sorts</a> of <font color="Maroon">c<sub>4</sub></font> as   <a href="osalg_1.html#NM4">OrderSortedSet</a> of <font color="Maroon">c<sub>1</sub></font> <b>by </b><i><a class="ref" href="osalg_1.html#T17">OSALG_1:17</a></i>;<br/>
<a NAME="E2:55_1_1"/>
<font color="Maroon">c<sub>5</sub></font> <a href="pboole.html#K3">/\</a> <font color="Maroon">c<sub>6</sub></font> is   <a href="osalg_1.html#NM4">OrderSortedSet</a> of <font color="Maroon">c<sub>1</sub></font>
 
<b>by </b><i><a class="ref" href="osalg_2.html#T1" target="_self">Th1</a></i>;<br/>
<a NAME="E3:55_1_1"/><b>then </b>
the <a href="msualg_1.html#U4">Sorts</a> of <span class="p1">(<span class="default"><font color="Maroon">c<sub>3</sub></font> <a href="msualg_2.html#K11">/\</a> <font color="Maroon">c<sub>4</sub></font></span>)</span> is   <a href="osalg_1.html#NM4">OrderSortedSet</a> of <font color="Maroon">c<sub>1</sub></font>
 
<b>by </b><i><a class="ref" href="msualg_2.html#D17">MSUALG_2:def 17</a></i>;<br/>
<b>hence </b><a NAME="E4:55_1_1"/>
<font color="Maroon">c<sub>3</sub></font> <a href="msualg_2.html#K11">/\</a> <font color="Maroon">c<sub>4</sub></font> is <a href="osalg_1.html#V12">order-sorted</a>
 <b>by </b><i><a class="ref" href="osalg_1.html#T17">OSALG_1:17</a></i>;<br/>


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