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<b>let </b><font color="Maroon">R</font> be  non <a href="struct_0.html#V3">empty</a>  <a href="struct_0.html#L2">ZeroStr</a> ;<br/><b>let </b><font color="Maroon">p</font> be   <a href="algseq_1.html#NM1">AlgSequence</a> of <font color="Maroon">R</font>;<br/>



<b>thus </b><a NAME="E1:29"/>
( <font color="Maroon">p</font> <a href="funct_2.html#R2">=</a> <span class="p1"><a href="algseq_1.html#K5" target="_self">&lt;%</a><span class="default"><span class="p2">(<span class="default"><a href="rlvect_1.html#K1">0.</a> <font color="Maroon">R</font></span>)</span></span><a href="algseq_1.html#K5" target="_self">%&gt;</a></span> implies  <a href="algseq_1.html#K4" target="_self">support</a> <font color="Maroon">p</font> <a href="hidden.html#R1">=</a>  <a href="xboole_0.html#K1">{}</a>  )
 <b>by </b><i>, </i>;<br/>

<b>assume </b><a NAME="E2:29"/><i><font color="Green">E26</font></i>: 
 <a href="algseq_1.html#K4" target="_self">support</a> <font color="Maroon">p</font> <a href="hidden.html#R1">=</a>  <a href="xboole_0.html#K1">{}</a> 
 ;<br/>

<a NAME="E3:29"/>
 <a href="algseq_1.html#K3" target="_self">len</a> <font color="Maroon">p</font> <a href="hidden.html#R1">=</a> 0
 
<b>by </b><i>, , </i>;<br/>
<b>hence </b><a NAME="E4:29"/>
<font color="Maroon">p</font> <a href="funct_2.html#R2">=</a> <span class="p1"><a href="algseq_1.html#K5" target="_self">&lt;%</a><span class="default"><span class="p2">(<span class="default"><a href="rlvect_1.html#K1">0.</a> <font color="Maroon">R</font></span>)</span></span><a href="algseq_1.html#K5" target="_self">%&gt;</a></span>
 <b>by </b><i/>;<br/>


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