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<b>consider </b><font color="Maroon">c<sub>3</sub></font>, <font color="Maroon">c<sub>4</sub></font> being    <a href="ringcat1.html#M2" target="_self">Element</a> of <font color="Maroon">c<sub>1</sub></font><b> such that </b><br/><a NAME="E2:61_1_1"/><i><font color="Green">E38</font></i>: 
<font color="Maroon">c<sub>3</sub></font> <a href="ringcat1.html#R1" target="_self">&lt;=</a> <font color="Maroon">c<sub>4</sub></font>
 <b>and </b><br/><a NAME="E3:61_1_1"/><i><font color="Green">E39</font></i>: 
<font color="Maroon">c<sub>2</sub></font> is    <a href="ringcat1.html#M1" target="_self">Morphism</a> of <font color="Maroon">c<sub>3</sub></font>,<font color="Maroon">c<sub>4</sub></font>
 <b>by </b><i><a class="ref" href="ringcat1.html#D18" target="_self">Def18</a></i>;<br/>
<b>reconsider </b><font color="Maroon">c<sub>5</sub></font> = <font color="Maroon">c<sub>2</sub></font> as    <a href="ringcat1.html#M1" target="_self">Morphism</a> of <font color="Maroon">c<sub>3</sub></font>,<font color="Maroon">c<sub>4</sub></font> <b>by </b><i><a class="txt" href="ringcat1.html#E3:61_1_1"><i><font color="Green">E39</font></i></a></i>;<br/>
<a NAME="E5:61_1_1"/>
 <a href="ringcat1.html#K1" target="_self">dom</a> <font color="Maroon">c<sub>5</sub></font> <a href="hidden.html#R1">=</a> <font color="Maroon">c<sub>3</sub></font>
 
<b>by </b><i><a class="txt" href="ringcat1.html#E2:61_1_1"><i><font color="Green">E38</font></i></a>, <a class="ref" href="ringcat1.html#D9" target="_self">Def9</a></i>;<br/>
<b>hence </b><a NAME="E6:61_1_1"/>
 <a href="ringcat1.html#K1" target="_self">dom</a> <font color="Maroon">c<sub>2</sub></font> is    <a href="ringcat1.html#M2" target="_self">Element</a> of <font color="Maroon">c<sub>1</sub></font>
 ;<br/>


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