@wolframtap ContourPlot[DirichletL[10, 1, u + I v], {u, -40, 40}, {v, -40, 40}, PlotLegends -> Automatic]
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@wolframtap ContourPlot[DirichletL[10, 1, u + I v], {u, -40, 40}, {v, -40, 40}, PlotLegends -> Automatic]