Derivative of the wavelet ℓ₁ -norm with respect to M_v (blue), Ω_m (orange), and A_s (green). The solid lines show the derivatives obtained from the prediction, and the dotted lines show the derivatives from the simulation. The predicted wavelet ℓ₁ -norm is derived from the predicted PDF, as was explained in previous sections. It is obtained at source red-shift z_s = 2 and inner radius θ₁ = 22.5′. The results for the simulation are obtained from the MassiveNus simulation suite by averaging the results over 10 000 simulations.