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<b>let </b><font color="Maroon">X</font> be   <a href="bhsp_1.html#NM1">RealUnitarySpace</a>;<br/><b>let </b><font color="Maroon">seq</font> be   <a href="normsp_1.html#NM2">sequence</a> of <font color="Maroon">X</font>;<br/>



<a NAME="E1:22"/>
<font color="Maroon">seq</font> <a href="normsp_1.html#K2">.</a> <span class="p1">(<span class="default">0 <a href="nat_1.html#K1">+</a> 1</span>)</span> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><a href="bhsp_4.html#K3" target="_self">Sum</a> <font color="Maroon">seq</font>,<span class="p2">(<span class="default">0 <a href="nat_1.html#K1">+</a> 1</span>)</span></span>)</span> <a href="rlvect_1.html#K6">-</a> <span class="p1">(<span class="default"><a href="bhsp_4.html#K3" target="_self">Sum</a> <font color="Maroon">seq</font>,0</span>)</span>
 
<b>by </b><i/>;<br/>
<b>hence </b><a NAME="E2:22"/>
<font color="Maroon">seq</font> <a href="normsp_1.html#K2">.</a> 1 <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><a href="bhsp_4.html#K3" target="_self">Sum</a> <font color="Maroon">seq</font>,1</span>)</span> <a href="rlvect_1.html#K6">-</a> <span class="p1">(<span class="default"><a href="bhsp_4.html#K3" target="_self">Sum</a> <font color="Maroon">seq</font>,0</span>)</span>
 ;<br/>


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