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<b>let </b><font color="Maroon">G</font> be  non <a href="struct_0.html#V3">empty</a> <a href="group_1.html#V2">unital</a>  <a href="group_1.html#L1">HGrStr</a> ;<br/>

<b>set </b><font color="Maroon">g</font> = the <a href="group_1.html#U1">mult</a> of <font color="Maroon">G</font>;<br/>
<a NAME="E1:13"/><i><font color="Green">E31</font></i>: 
(  <a href="finseq_1.html#K3">len</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K6">&lt;*&gt;</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">G</font></span>)</span> <a href="hidden.html#R1">=</a> 0 &amp; the <a href="group_1.html#U1">mult</a> of <font color="Maroon">G</font> <a href="setwiseo.html#NR1" target="_self">has_a_unity</a>  )
 
<b>by </b><i><a class="ref" href="finseq_1.html#T32">FINSEQ_1:32</a>, <a class="ref" href="group_1.html#T34">GROUP_1:34</a></i>;<br/>
<b>thus </b> <a href="group_4.html#K3" target="_self">Product</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K6">&lt;*&gt;</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">G</font></span>)</span> = 
 <a href="binop_1.html#K3">the_unity_wrt</a> the <a href="group_1.html#U1">mult</a> of <font color="Maroon">G</font>
<b>by </b><i>, <a class="ref" href="finsop_1.html#D1">FINSOP_1:def 1</a></i>
<br/>.= 
 <a href="group_1.html#K2">1.</a> <font color="Maroon">G</font>
<b>by </b><i><a class="ref" href="group_1.html#T33">GROUP_1:33</a></i>
;<br/>


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