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<b>let </b><font color="Maroon" title="c1">C1</font> be  non <a href="struct_0.html#V3" title="STRUCT_0:attr.3">empty</a> <a href="altcat_1.html#V2" title="ALTCAT_1:attr.2">transitive</a> <a href="altcat_1.html#V12" title="ALTCAT_1:attr.12">with_units</a>  <a href="altcat_1.html#L2" title="ALTCAT_1:struct.2">AltCatStr</a> ;<br/><b>let </b><font color="Maroon" title="c2">C2</font> be  non <a href="struct_0.html#V3" title="STRUCT_0:attr.3">empty</a> <a href="altcat_1.html#V12" title="ALTCAT_1:attr.12">with_units</a>  <a href="altcat_1.html#L2" title="ALTCAT_1:struct.2">AltCatStr</a> ;<br/><b>let </b><font color="Maroon" title="c3">F</font> be    <a href="functor0.html#M2" title="FUNCTOR0:mode.2">Functor</a> of <font color="Maroon" title="c1">C1</font>,<font color="Maroon" title="c2">C2</font>;<br/>





<b>assume </b><a NAME="E1:119"/><i><font color="Green" title="E78">A1</font></i>: 
( <font color="Maroon" title="c3">F</font> is <a href="functor0.html#V15" title="FUNCTOR0:attr.15">covariant</a> &amp; <font color="Maroon" title="c3">F</font> is <a href="functor0.html#V5" title="FUNCTOR0:attr.5">onto</a> )
 ;<br/>

<a NAME="E2:119"/><b>then </b>
<font color="Maroon" title="c3">F</font> is <a href="functor0.html#V10" title="FUNCTOR0:attr.10">Covariant</a>
 
<b>by </b><i><a class="ref" href="functor0.html#D27" target="_self" title="FUNCTOR0:def.27">Def27</a></i>;<br/>
<b>hence </b><a NAME="E3:119"/>
<font color="Maroon" title="c3">F</font> is <a href="functor0.html#V7" title="FUNCTOR0:attr.7">coreflexive</a>
 <b>by </b><i><a class="txt" href="functor0.html#E1:119"><i><font color="Green" title="E78">A1</font></i></a>, <a class="ref" href="functor0.html#T45" target="_self" title="FUNCTOR0:th.45">Th45</a></i>;<br/>


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