"o">.</span><span class="n">norm_squared</span><span class="p" data-group-id="4786615588-5">(</span><span class="p" data-group-id="4786615588-6">{</span><span class="mi">2</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="o">-</span><span class="mi">1</span><span class="p" data-group-id="4786615588-6">}</span><span class="p" data-group-id="4786615588-5">)</span><span class="w">
</span><span class="mi">5</span><span cla