Absolute magnitude distributions of galaxies around AGNs calculated as in equation (18). Detection efficiencies were corrected and plotted for |$M<M_{50\%}$|⁠. The left-hand panel shows the distributions measured in M_λ310 for z0, z1, and z2 groups. The right-hand panel shows the distributions measured in M_λ220 for z2, z3, and z4 groups. The solid lines represent the luminosity function calculated by the parametrization used in this work and scaled by a factor calculated from the cross-correlation length obtained for |$M_{50\%}$| galaxy samples. The scaling factor was calculated as in equa-tion (21). The dashed lines represent Schechter functions fitted to the data points. The arrows at the top of the panels indicate the 90% detection limit. (Color online)