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

<b>let </b><font color="Maroon">c<sub>1</sub></font>, <font color="Maroon">c<sub>2</sub></font> be  non <a href="struct_0.html#V3">empty</a> <a href="altcat_2.html#V1">reflexive</a>  <a href="altcat_1.html#L2">AltCatStr</a> ;<br/><b>let </b><font color="Maroon">c<sub>3</sub></font> be  non <a href="struct_0.html#V3">empty</a> <a href="altcat_2.html#V1">reflexive</a>  <a href="altcat_2.html#M1">SubCatStr</a> of <font color="Maroon">c<sub>1</sub></font>;<br/><b>let </b><font color="Maroon">c<sub>4</sub></font> be  non <a href="struct_0.html#V3">empty</a>  <a href="altcat_2.html#M1">SubCatStr</a> of <font color="Maroon">c<sub>1</sub></font>;<br/><b>let </b><font color="Maroon">c<sub>5</sub></font> be  non <a href="struct_0.html#V3">empty</a>  <a href="altcat_2.html#M1">SubCatStr</a> of <font color="Maroon">c<sub>3</sub></font>;<br/>







<b>assume </b><a NAME="E1:17"/><i><font color="Green">E11</font></i>: 
<font color="Maroon">c<sub>4</sub></font> <a href="hidden.html#R1">=</a> <font color="Maroon">c<sub>5</sub></font>
 ;<br/>

<b>let </b><font color="Maroon">c<sub>6</sub></font> be    <a href="functor0.html#L2">FunctorStr</a> of <font color="Maroon">c<sub>1</sub></font>,<font color="Maroon">c<sub>2</sub></font>;<br/>

<b>thus </b><font color="Maroon">c<sub>6</sub></font> <a href="functor0.html#K14">|</a> <font color="Maroon">c<sub>4</sub></font> = 
<font color="Maroon">c<sub>6</sub></font> <a href="functor0.html#K13">*</a> <span class="p1">(<span class="default"><a href="functor0.html#K10">incl</a> <font color="Maroon">c<sub>4</sub></font></span>)</span>

<br/>.= 
<font color="Maroon">c<sub>6</sub></font> <a href="functor0.html#K13">*</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="functor0.html#K10">incl</a> <font color="Maroon">c<sub>3</sub></font></span>)</span> <a href="functor0.html#K13">*</a> <span class="p2">(<span class="default"><a href="functor0.html#K10">incl</a> <font color="Maroon">c<sub>5</sub></font></span>)</span></span>)</span>
<b>by </b><i><a class="txt" href="functor1.html#E1:17"><i><font color="Green">E11</font></i></a>, <a class="ref" href="functor1.html#T5" target="_self">Th5</a></i>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon">c<sub>6</sub></font> <a href="functor0.html#K13">*</a> <span class="p2">(<span class="default"><a href="functor0.html#K10">incl</a> <font color="Maroon">c<sub>3</sub></font></span>)</span></span>)</span> <a href="functor0.html#K13">*</a> <span class="p1">(<span class="default"><a href="functor0.html#K10">incl</a> <font color="Maroon">c<sub>5</sub></font></span>)</span>
<b>by </b><i><a class="ref" href="functor0.html#T33">FUNCTOR0:33</a></i>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon">c<sub>6</sub></font> <a href="functor0.html#K14">|</a> <font color="Maroon">c<sub>3</sub></font></span>)</span> <a href="functor0.html#K13">*</a> <span class="p1">(<span class="default"><a href="functor0.html#K10">incl</a> <font color="Maroon">c<sub>5</sub></font></span>)</span>

<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon">c<sub>6</sub></font> <a href="functor0.html#K14">|</a> <font color="Maroon">c<sub>3</sub></font></span>)</span> <a href="functor0.html#K14">|</a> <font color="Maroon">c<sub>5</sub></font>

;<br/>


</div>
