Median triaxiality of halos as function of variance of non-linear fluctuations of cosmic matter internal to DM halos. All the curves superpose, meaning again that the cosmological dependence of mass-triaxiality relations is completely encapsulated in the nonlinear power spectrum. However, when |f_R0| = 10⁻⁶, independently of the neutrino mass, the median relation between variance and triaxiality does not identify with the relation obtained for the other models.