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<b>let </b><font color="Maroon" title="c1">L</font> be  non <a href="struct_0.html#V2" title="STRUCT_0:attr.2">empty</a>  <a href="rlvect_1.html#L1" title="RLVECT_1:struct.1">LoopStr</a> ;<br/>

<b>assume </b><a NAME="E1:96_1_1"/><i><font color="Green" title="E46">A1</font></i>: 
( <font color="Maroon" title="c1">L</font> is <a href="rlvect_1.html#V3" title="RLVECT_1:attr.3">Abelian</a> &amp; <font color="Maroon" title="c1">L</font> is <a href="rlvect_1.html#V5" title="RLVECT_1:attr.5">right_zeroed</a> )
 ;<br/>

<b>let </b><font color="Maroon" title="c2">a</font> be   <a href="struct_0.html#NM1" title="STRUCT_0:NM.1">Element</a> of <font color="Maroon" title="c1">L</font>; <i><font color="Red">:: according to </font></i><a class="ref" href="rlvect_1.html#D14" target="_self" title="RLVECT_1:def.14">RLVECT_1:def 14</a><br/>

<b>thus </b><a NAME="E2:96_1_1"/>
<font color="Maroon" title="c2">a</font> <a href="rlvect_1.html#K1" title="RLVECT_1:func.1">+</a> <span class="p1">(<span class="default"><a href="struct_0.html#K4" title="STRUCT_0:func.4">0.</a> <font color="Maroon" title="c1">L</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c2">a</font>
 <b>by </b><i><a class="txt" href="rlvect_1.html#E1:96_1_1"><i><font color="Green" title="E46">A1</font></i></a>, <a class="ref" href="rlvect_1.html#D7" target="_self" title="RLVECT_1:def.7">Def7</a></i>;<br/>

<b>hence </b><a NAME="E3:96_1_1"/>
<span class="p1">(<span class="default"><a href="struct_0.html#K4" title="STRUCT_0:func.4">0.</a> <font color="Maroon" title="c1">L</font></span>)</span> <a href="rlvect_1.html#K1" title="RLVECT_1:func.1">+</a> <font color="Maroon" title="c2">a</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c2">a</font>
 <b>by </b><i><a class="txt" href="rlvect_1.html#E1:96_1_1"><i><font color="Green" title="E46">A1</font></i></a>, <a class="ref" href="rlvect_1.html#D5" target="_self" title="RLVECT_1:def.5">Def5</a></i>;<br/>


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