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<b>let </b><font color="Maroon">I</font> be  non <a href="struct_0.html#V3">empty</a> <a href="group_1.html#V7">commutative</a> non <a href="vectsp_1.html#V10">degenerated</a>  <a href="vectsp_1.html#L2">multLoopStr_0</a> ;<br/><b>let </b><font color="Maroon">u</font> be    <a href="subset_1.html#M2">Element</a> of  <a href="quofield.html#K1" target="_self">Q.</a> <font color="Maroon">I</font>;<br/>



<a NAME="E1:13"/>
<span class="p1">(<span class="default"><font color="Maroon">u</font> <a href="quofield.html#K2" target="_self">`1</a> </span>)</span> <a href="group_1.html#K10">*</a> <span class="p1">(<span class="default"><font color="Maroon">u</font> <a href="quofield.html#K3" target="_self">`2</a> </span>)</span> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><font color="Maroon">u</font> <a href="quofield.html#K2" target="_self">`1</a> </span>)</span> <a href="group_1.html#K10">*</a> <span class="p1">(<span class="default"><font color="Maroon">u</font> <a href="quofield.html#K3" target="_self">`2</a> </span>)</span>
 
;<br/>
<b>hence </b><a NAME="E2:13"/>
<font color="Maroon">u</font> <a href="hidden.html#R2">in</a>  <a href="quofield.html#K8" target="_self">QClass.</a> <font color="Maroon">u</font>
 <b>by </b><i/>;<br/>


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