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<b>let </b><font color="Maroon">c<sub>1</sub></font> be  <a href="osalg_4.html#V2">locally_directed</a> <a href="osalg_1.html#NM3">OrderSortedSign</a>;<br/><b>let </b><font color="Maroon">c<sub>2</sub></font> be  <a href="relat_1.html#V2">V5</a> <a href="struct_0.html#NM9">ManySortedSet</a> of <font color="Maroon">c<sub>1</sub></font>;<br/>



<b>take </b>
 <a href="osafree.html#K24" target="_self">OSFreeGen</a> <font color="Maroon">c<sub>2</sub></font>
; <i><font color="Red">:: according to </font></i><a class="ref" href="osafree.html#D3" target="_self">OSAFREE:def 3</a><br/>

<b>thus </b><a NAME="E1:83"/>
 <a href="osafree.html#K24" target="_self">OSFreeGen</a> <font color="Maroon">c<sub>2</sub></font> is <a href="osafree.html#V1" target="_self">osfree</a>
 <b>by </b><i><a class="ref" href="osafree.html#T39" target="_self">Th39</a></i>;<br/>


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