Galaxy stellar mass functions in the PC environment compared with the cosmological box. The red line is the median of the GSMFs in PC cores, with and without central galaxies (solid and dashed lines, respectively; we note that the dashed line stops at M_* ∼ 10¹¹ M_⊙ because the median GSMF in PC cores in the higher mass bins is zero when central galaxies are excluded). The green line shows the median GSMF in the less dense, diffuse PC regions, masking out all PC cores. The normalizations have been rescaled by the factors reported in the legend. The shaded regions define the 16th–84th percentile range spanned by the different PCs (or PC cores). The black line is the GSMF in the cosmological box, with Poissonian uncertainties.