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<b>take </b>
 <a href="grcat_1.html#K7">id</a> <font color="Maroon">L</font>
;<br/>

<b>thus </b><a NAME="E1:15_1_1"/>
(  <a href="grcat_1.html#K7">id</a> <font color="Maroon">L</font> is <a href="waybel_0.html#V18">sups-preserving</a> &amp;  <a href="grcat_1.html#K7">id</a> <font color="Maroon">L</font> is <a href="waybel_0.html#V17">infs-preserving</a> &amp;  <a href="grcat_1.html#K7">id</a> <font color="Maroon">L</font> is <a href="waybel_1.html#V7">closure</a> &amp;  <a href="grcat_1.html#K7">id</a> <font color="Maroon">L</font> is <a href="waybel_1.html#V8">kernel</a> &amp;  <a href="grcat_1.html#K7">id</a> <font color="Maroon">L</font> is <a href="funct_1.html#V2">one-to-one</a> )
 ;<br/>


</div>
