of it. Below the summation operator (or on the lower-right side) is an <em>iterator</em> <span class="math inline">\(i\)</span>, which gives more information about which values to sum. The iterator goes from the value it is given below or on the bottom-right side (here, the iterator is assigned the value 1), to the value on the top (or top-right) of the summation operator (in this case <span class="math inline">\(n\)</span>). So here, the operator states that we should sum up all values <span class="math in