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<b>let </b><font color="Maroon">G1</font> be   <a href="group_1.html#NM1">Group</a>, <font color="Maroon">G2</font> be   <a href="group_1.html#NM1">Group</a>, <font color="Maroon">H1</font> be   <a href="group_1.html#NM1">Group</a>, <font color="Maroon">H2</font> be   <a href="group_1.html#NM1">Group</a>;<br/>

<b>given </b><font color="Maroon">h1</font> being   <a href="group_6.html#NM2">Homomorphism</a> of <font color="Maroon">G1</font>,<font color="Maroon">H1</font><b> such that </b><a NAME="E1:8"/><i><font color="Green">E39</font></i>: 
<font color="Maroon">h1</font> <a href="group_6.html#NR3" target="_self">is_isomorphism</a> 
 ; <i><font color="Red">:: according to </font></i><a class="ref" href="group_6.html#D15">GROUP_6:def 15</a><br/>

<b>given </b><font color="Maroon">h2</font> being   <a href="group_6.html#NM2">Homomorphism</a> of <font color="Maroon">G2</font>,<font color="Maroon">H2</font><b> such that </b><a NAME="E2:8"/><i><font color="Green">E40</font></i>: 
<font color="Maroon">h2</font> <a href="group_6.html#NR3" target="_self">is_isomorphism</a> 
 ; <i><font color="Red">:: according to </font></i><a class="ref" href="group_6.html#D15">GROUP_6:def 15</a><br/>

<b>take </b><font color="Maroon">h</font> =  <a href="topalg_4.html#K2" target="_self">Gr2Iso</a> <font color="Maroon">h1</font>,<font color="Maroon">h2</font>; <i><font color="Red">:: according to </font></i><a class="ref" href="group_6.html#D15">GROUP_6:def 15</a><br/>

<b>thus </b><a NAME="E3:8"/>
<font color="Maroon">h</font> is <a href="group_6.html#V4">being_isomorphism</a>
 <b>by </b><i>, , </i>;<br/>


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