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474                           APPENDICES

                is solved by Newton–Raphson iteration successively for j = 1, . . . , N step with
                                         j                  p
                                   γ j =    γ   and p j = j    .
                                        N step            N step
                The Newton–Raphson iteration solving (G.7) for a given value of j starts with
                u 0 = u (j−1)  with u (j−1)  denoting the solution of (G.7) with j − 1 instead of
                j. For j = 1 we take the starting value u 0 = e 2πik/m , being the solution of
                ln(u) = 2πik/m. The procedure is very robust against the choice of N step .


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