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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#L1" title="ALTCAT_1:struct.1">AltGraph</a> ;<br/><b>let </b><font color="Maroon" title="c2">C2</font>, <font color="Maroon" title="c3">C3</font> be  non <a href="struct_0.html#V3" title="STRUCT_0:attr.3">empty</a> <a href="altcat_2.html#V1" title="ALTCAT_2:attr.1">reflexive</a>  <a href="altcat_1.html#L1" title="ALTCAT_1:struct.1">AltGraph</a> ;<br/><b>let </b><font color="Maroon" title="c4">F</font> be  <a href="functor0.html#V8" title="FUNCTOR0:attr.8">feasible</a>  <a href="functor0.html#L2" title="FUNCTOR0:struct.2">FunctorStr</a> of <font color="Maroon" title="c1">C1</font>,<font color="Maroon" title="c2">C2</font>;<br/><b>let </b><font color="Maroon" title="c5">G</font> be    <a href="functor0.html#L2" title="FUNCTOR0:struct.2">FunctorStr</a> of <font color="Maroon" title="c2">C2</font>,<font color="Maroon" title="c3">C3</font>;<br/>







<b>assume </b><a NAME="E1:14"/><i><font color="Green" title="E9">A1</font></i>: 
( <font color="Maroon" title="c4">F</font> is <a href="functor0.html#V19" title="FUNCTOR0:attr.19">injective</a> &amp; <font color="Maroon" title="c5">G</font> is <a href="functor0.html#V19" title="FUNCTOR0:attr.19">injective</a> )
 ;<br/>

<a NAME="E2:14"/><b>then </b><i><font color="Green" title="E10">A2</font></i>: 
( <font color="Maroon" title="c4">F</font> is <a href="functor0.html#V4" title="FUNCTOR0:attr.4">one-to-one</a> &amp; <font color="Maroon" title="c5">G</font> is <a href="functor0.html#V4" title="FUNCTOR0:attr.4">one-to-one</a> )
 
<b>by </b><i><a class="ref" href="functor0.html#D34" title="FUNCTOR0:def.34">FUNCTOR0:def 34</a></i>;<br/>
<a NAME="E3:14"/><i><font color="Green" title="E11">A3</font></i>: 
( <font color="Maroon" title="c4">F</font> is <a href="functor0.html#V17" title="FUNCTOR0:attr.17">faithful</a> &amp; <font color="Maroon" title="c5">G</font> is <a href="functor0.html#V17" title="FUNCTOR0:attr.17">faithful</a> )
 
<b>by </b><i><a class="txt" href="functor1.html#E1:14"><i><font color="Green" title="E9">A1</font></i></a>, <a class="ref" href="functor0.html#D34" title="FUNCTOR0:def.34">FUNCTOR0:def 34</a></i>;<br/>
<a NAME="E4:14"/><i><font color="Green" title="E12">A4</font></i>: 
<font color="Maroon" title="c5">G</font> <a href="functor0.html#K13" title="FUNCTOR0:func.13">*</a> <font color="Maroon" title="c4">F</font> is <a href="functor0.html#V4" title="FUNCTOR0:attr.4">one-to-one</a>
 
<b>by </b><i><a class="txt" href="functor1.html#E2:14"><i><font color="Green" title="E10">A2</font></i></a>, <a class="ref" href="functor1.html#T7" target="_self" title="FUNCTOR1:th.7">Th7</a></i>;<br/>
<a NAME="E5:14"/>
<font color="Maroon" title="c5">G</font> <a href="functor0.html#K13" title="FUNCTOR0:func.13">*</a> <font color="Maroon" title="c4">F</font> is <a href="functor0.html#V17" title="FUNCTOR0:attr.17">faithful</a>
 
<b>by </b><i><a class="txt" href="functor1.html#E3:14"><i><font color="Green" title="E11">A3</font></i></a>, <a class="ref" href="functor1.html#T8" target="_self" title="FUNCTOR1:th.8">Th8</a></i>;<br/>
<b>hence </b><a NAME="E6:14"/>
<font color="Maroon" title="c5">G</font> <a href="functor0.html#K13" title="FUNCTOR0:func.13">*</a> <font color="Maroon" title="c4">F</font> is <a href="functor0.html#V19" title="FUNCTOR0:attr.19">injective</a>
 <b>by </b><i><a class="txt" href="functor1.html#E4:14"><i><font color="Green" title="E12">A4</font></i></a>, <a class="ref" href="functor0.html#D34" title="FUNCTOR0:def.34">FUNCTOR0:def 34</a></i>;<br/>


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