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<b>let </b><font color="Maroon" title="c1">UN</font> be   <a href="classes2.html#NM1" title="CLASSES2:NM.1">Universe</a>;<br/>

<b>set </b><font color="Maroon" title="c2">X</font> =  <a href="grcat_1.html#K20" title="GRCAT_1:func.20">Morphs</a> <span class="p1">(<span class="default"><a href="grcat_1.html#K19" title="GRCAT_1:func.19">GroupObjects</a> <font color="Maroon" title="c1">UN</font></span>)</span>;<br/>
<b>let </b><font color="Maroon" title="c3">f</font>, <font color="Maroon" title="c4">g</font>, <font color="Maroon" title="c5">h</font> be   <a href="cat_1.html#NM2" title="CAT_1:NM.2">Morphism</a> of <span class="p1">(<span class="default"><a href="grcat_1.html#K28" title="GRCAT_1:func.28">GroupCat</a> <font color="Maroon" title="c1">UN</font></span>)</span>;<br/>

<b>assume </b><a NAME="E1:98"/><i><font color="Green" title="E60">A1</font></i>: 
(  <a href="cat_1.html#K2" title="CAT_1:func.2">dom</a> <font color="Maroon" title="c5">h</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="cat_1.html#K3" title="CAT_1:func.3">cod</a> <font color="Maroon" title="c4">g</font> &amp;  <a href="cat_1.html#K2" title="CAT_1:func.2">dom</a> <font color="Maroon" title="c4">g</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="cat_1.html#K3" title="CAT_1:func.3">cod</a> <font color="Maroon" title="c3">f</font> )
 ;<br/>

<b>reconsider </b><font color="Maroon" title="c6">f'</font> = <font color="Maroon" title="c3">f</font>, <font color="Maroon" title="c7">g'</font> = <font color="Maroon" title="c4">g</font>, <font color="Maroon" title="c8">h'</font> = <font color="Maroon" title="c5">h</font> as  <a href="grcat_1.html#V2" title="GRCAT_1:attr.2">strict</a>  <a href="grcat_1.html#M3" title="GRCAT_1:mode.3">Element</a> of  <a href="grcat_1.html#K20" title="GRCAT_1:func.20">Morphs</a> <span class="p1">(<span class="default"><a href="grcat_1.html#K19" title="GRCAT_1:func.19">GroupObjects</a> <font color="Maroon" title="c1">UN</font></span>)</span> <b>by </b><i><a class="ref" href="grcat_1.html#T47" target="_self" title="GRCAT_1:th.47">Th47</a></i>;<br/>
<a NAME="E3:98"/><i><font color="Green" title="E61">A2</font></i>: 
(  <a href="grcat_1.html#K21" title="GRCAT_1:func.21">dom</a> <font color="Maroon" title="c8">h'</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="grcat_1.html#K22" title="GRCAT_1:func.22">cod</a> <font color="Maroon" title="c7">g'</font> &amp;  <a href="grcat_1.html#K21" title="GRCAT_1:func.21">dom</a> <font color="Maroon" title="c7">g'</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="grcat_1.html#K22" title="GRCAT_1:func.22">cod</a> <font color="Maroon" title="c6">f'</font> )
 
<b>by </b><i><a class="txt" href="grcat_1.html#E1:98"><i><font color="Green" title="E60">A1</font></i></a>, <a class="ref" href="grcat_1.html#T50" target="_self" title="GRCAT_1:th.50">Th50</a></i>;<br/>
<a NAME="E4:98"/><i><font color="Green" title="E62">A3</font></i>: 
( <font color="Maroon" title="c7">g'</font> <a href="grcat_1.html#K15" title="GRCAT_1:func.15">*</a> <font color="Maroon" title="c6">f'</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c4">g</font> <a href="cat_1.html#K4" title="CAT_1:func.4">*</a> <font color="Maroon" title="c3">f</font> &amp; <font color="Maroon" title="c8">h'</font> <a href="grcat_1.html#K15" title="GRCAT_1:func.15">*</a> <font color="Maroon" title="c7">g'</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c5">h</font> <a href="cat_1.html#K4" title="CAT_1:func.4">*</a> <font color="Maroon" title="c4">g</font> )
 
<b>by </b><i><a class="txt" href="grcat_1.html#E1:98"><i><font color="Green" title="E60">A1</font></i></a>, <a class="ref" href="grcat_1.html#T50" target="_self" title="GRCAT_1:th.50">Th50</a></i>;<br/>
<b>reconsider </b><font color="Maroon" title="c9">gf</font> = <font color="Maroon" title="c7">g'</font> <a href="grcat_1.html#K15" title="GRCAT_1:func.15">*</a> <font color="Maroon" title="c6">f'</font>, <font color="Maroon" title="c10">hg</font> = <font color="Maroon" title="c8">h'</font> <a href="grcat_1.html#K15" title="GRCAT_1:func.15">*</a> <font color="Maroon" title="c7">g'</font> as    <a href="grcat_1.html#M3" title="GRCAT_1:mode.3">Element</a> of  <a href="grcat_1.html#K20" title="GRCAT_1:func.20">Morphs</a> <span class="p1">(<span class="default"><a href="grcat_1.html#K19" title="GRCAT_1:func.19">GroupObjects</a> <font color="Maroon" title="c1">UN</font></span>)</span> <b>by </b><i><a class="txt" href="grcat_1.html#E3:98"><i><font color="Green" title="E61">A2</font></i></a>, <a class="ref" href="grcat_1.html#T45" target="_self" title="GRCAT_1:th.45">Th45</a></i>;<br/>
<a NAME="E6:98"/><i><font color="Green" title="E63">A4</font></i>: 
 <a href="cat_1.html#K2" title="CAT_1:func.2">dom</a> <font color="Maroon" title="c5">h</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="cat_1.html#K3" title="CAT_1:func.3">cod</a> <span class="p1">(<span class="default"><font color="Maroon" title="c4">g</font> <a href="cat_1.html#K4" title="CAT_1:func.4">*</a> <font color="Maroon" title="c3">f</font></span>)</span>
 
<b>by </b><i><a class="txt" href="grcat_1.html#E1:98"><i><font color="Green" title="E60">A1</font></i></a>, <a class="txt" href="grcat_1.html#E90"><i><font color="Green" title="E58">Lm4</font></i></a></i>;<br/>
<a NAME="E7:98"/><i><font color="Green" title="E64">A5</font></i>: 
 <a href="cat_1.html#K2" title="CAT_1:func.2">dom</a> <span class="p1">(<span class="default"><font color="Maroon" title="c5">h</font> <a href="cat_1.html#K4" title="CAT_1:func.4">*</a> <font color="Maroon" title="c4">g</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="cat_1.html#K3" title="CAT_1:func.3">cod</a> <font color="Maroon" title="c3">f</font>
 
<b>by </b><i><a class="txt" href="grcat_1.html#E1:98"><i><font color="Green" title="E60">A1</font></i></a>, <a class="txt" href="grcat_1.html#E90"><i><font color="Green" title="E58">Lm4</font></i></a></i>;<br/>
<font color="Maroon" title="c5">h</font> <a href="cat_1.html#K4" title="CAT_1:func.4">*</a> <span class="p1">(<span class="default"><font color="Maroon" title="c4">g</font> <a href="cat_1.html#K4" title="CAT_1:func.4">*</a> <font color="Maroon" title="c3">f</font></span>)</span> = 
<font color="Maroon" title="c8">h'</font> <a href="grcat_1.html#K15" title="GRCAT_1:func.15">*</a> <font color="Maroon" title="c9">gf</font>
<b>by </b><i><a class="txt" href="grcat_1.html#E4:98"><i><font color="Green" title="E62">A3</font></i></a>, <a class="txt" href="grcat_1.html#E6:98"><i><font color="Green" title="E63">A4</font></i></a>, <a class="ref" href="grcat_1.html#T50" target="_self" title="GRCAT_1:th.50">Th50</a></i>
<br/>.= 
<font color="Maroon" title="c10">hg</font> <a href="grcat_1.html#K15" title="GRCAT_1:func.15">*</a> <font color="Maroon" title="c6">f'</font>
<b>by </b><i><a class="txt" href="grcat_1.html#E3:98"><i><font color="Green" title="E61">A2</font></i></a>, <a class="ref" href="grcat_1.html#T33" target="_self" title="GRCAT_1:th.33">Th33</a></i>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon" title="c5">h</font> <a href="cat_1.html#K4" title="CAT_1:func.4">*</a> <font color="Maroon" title="c4">g</font></span>)</span> <a href="cat_1.html#K4" title="CAT_1:func.4">*</a> <font color="Maroon" title="c3">f</font>
<b>by </b><i><a class="txt" href="grcat_1.html#E4:98"><i><font color="Green" title="E62">A3</font></i></a>, <a class="txt" href="grcat_1.html#E7:98"><i><font color="Green" title="E64">A5</font></i></a>, <a class="ref" href="grcat_1.html#T50" target="_self" title="GRCAT_1:th.50">Th50</a></i>
;<br/>
<b>hence </b><a NAME="E9:98"/>
<font color="Maroon" title="c5">h</font> <a href="cat_1.html#K4" title="CAT_1:func.4">*</a> <span class="p1">(<span class="default"><font color="Maroon" title="c4">g</font> <a href="cat_1.html#K4" title="CAT_1:func.4">*</a> <font color="Maroon" title="c3">f</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><font color="Maroon" title="c5">h</font> <a href="cat_1.html#K4" title="CAT_1:func.4">*</a> <font color="Maroon" title="c4">g</font></span>)</span> <a href="cat_1.html#K4" title="CAT_1:func.4">*</a> <font color="Maroon" title="c3">f</font>
 ;<br/>


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