="p">(</span><span class="n">j</span><span class="p">)</span>
         <span class="k">else</span>
<span class="k">            </span><span class="n">a_elt</span><span class="p">(</span><span class="n">innz</span><span class="p">)</span> <span class="o">=</span> <span class="n">a_elt</span><span class="p">(</span><span class="n">innz</span><span class="p">)</span> <span class="o">+</span> <span class="n">a_elt</span><span class="p">(</span><span class="n">j</span><span class="p">)</span>   <span class="c">!