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<b>let </b><font color="Maroon">S</font> be   <a href="struct_0.html#NM2">Subset</a> of <font color="Maroon">L</font>;<br/>

<b>assume </b><a NAME="E1:21_1_1"/>
<font color="Maroon">S</font> is <a href="waybel23.html#V3" target="_self">infs-closed</a>
 ;<br/>

<b>then reconsider </b><font color="Maroon">S1</font> =  <a href="yellow_0.html#K5">subrelstr</a> <font color="Maroon">S</font> as  <a href="yellow_0.html#V7">infs-inheriting</a>  <a href="yellow_0.html#M1">SubRelStr</a> of <font color="Maroon">L</font> <b>by </b><i/>;<br/>
<a NAME="E3:21_1_1"/>
<font color="Maroon">S1</font> is <a href="yellow_0.html#V5">meet-inheriting</a>
 
;<br/>
<b>hence </b><a NAME="E4:21_1_1"/>
<font color="Maroon">S</font> is <a href="waybel23.html#V1" target="_self">meet-closed</a>
 <b>by </b><i/>;<br/>


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