<?xml version="1.0"?>
<div class="add">

<b>let </b><font color="Maroon">A</font> be  non <a href="struct_0.html#V3">empty</a> <a href="altcat_1.html#V2">transitive</a> <a href="altcat_1.html#V12">with_units</a>  <a href="altcat_1.html#L2">AltCatStr</a> ;<br/><b>let </b><font color="Maroon">B</font> be  non <a href="struct_0.html#V3">empty</a> <a href="altcat_1.html#V2">transitive</a> <a href="altcat_1.html#V12">with_units</a>  <a href="altcat_1.html#L2">AltCatStr</a> ;<br/><b>let </b><font color="Maroon">C</font> be  non <a href="struct_0.html#V3">empty</a> <a href="altcat_1.html#V2">transitive</a> <a href="altcat_1.html#V12">with_units</a>  <a href="altcat_1.html#L2">AltCatStr</a> ;<br/><b>let </b><font color="Maroon">F1</font> be  <a href="functor0.html#V15">covariant</a>  <a href="functor0.html#M2">Functor</a> of <font color="Maroon">A</font>,<font color="Maroon">B</font>;<br/><b>let </b><font color="Maroon">G1</font> be  <a href="functor0.html#V15">covariant</a>  <a href="functor0.html#M2">Functor</a> of <font color="Maroon">B</font>,<font color="Maroon">C</font>;<br/>









<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="33_1"><b>now </b></a><div class="add"><b>let </b><font color="Maroon">a</font> be   <a href="altcat_1.html#NM1">object</a> of <font color="Maroon">A</font>;<br/><b>thus </b><span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="functor2.html#K4">idt</a> <font color="Maroon">G1</font></span>)</span> <a href="functor3.html#K6" target="_self">*</a> <font color="Maroon">F1</font></span>)</span> <a href="functor2.html#K2">!</a> <font color="Maroon">a</font> = 
<span class="p1">(<span class="default"><a href="functor2.html#K4">idt</a> <font color="Maroon">G1</font></span>)</span> <a href="functor2.html#K2">!</a> <span class="p1">(<span class="default"><font color="Maroon">F1</font> <a href="functor0.html#K3">.</a> <font color="Maroon">a</font></span>)</span>
<b>by </b><i/>
<br/>.= 
 <a href="altcat_1.html#K8">idm</a> <span class="p1">(<span class="default"><font color="Maroon">G1</font> <a href="functor0.html#K3">.</a> <span class="p2">(<span class="default"><font color="Maroon">F1</font> <a href="functor0.html#K3">.</a> <font color="Maroon">a</font></span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="functor2.html#T6">FUNCTOR2:6</a></i>
<br/>.= 
 <a href="altcat_1.html#K8">idm</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">G1</font> <a href="functor3.html#K1" target="_self">*</a> <font color="Maroon">F1</font></span>)</span> <a href="functor0.html#K3">.</a> <font color="Maroon">a</font></span>)</span>
<b>by </b><i><a class="ref" href="functor0.html#T34">FUNCTOR0:34</a></i>
<br/>.= 
<span class="p1">(<span class="default"><a href="functor2.html#K4">idt</a> <span class="p2">(<span class="default"><font color="Maroon">G1</font> <a href="functor3.html#K1" target="_self">*</a> <font color="Maroon">F1</font></span>)</span></span>)</span> <a href="functor2.html#K2">!</a> <font color="Maroon">a</font>
<b>by </b><i><a class="ref" href="functor2.html#T6">FUNCTOR2:6</a></i>
;<br/></div><b>end;</b></div>
<b>hence </b><a NAME="E2:33"/>
<span class="p1">(<span class="default"><a href="functor2.html#K4">idt</a> <font color="Maroon">G1</font></span>)</span> <a href="functor3.html#K6" target="_self">*</a> <font color="Maroon">F1</font> <a href="pboole.html#R6">=</a>  <a href="functor2.html#K4">idt</a> <span class="p1">(<span class="default"><font color="Maroon">G1</font> <a href="functor3.html#K1" target="_self">*</a> <font color="Maroon">F1</font></span>)</span>
 <b>by </b><i><a class="ref" href="functor2.html#T5">FUNCTOR2:5</a></i>;<br/>


</div>
