2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/5916We modify the Press-Schechter formalism to calculate the mass function of gravitationally bounded objects in a local Universe with size $L> 10h^{-1}$Mpc, i.e. separately in voids ($Ω_{m,L}<Ω_m$) and superclusters ($Ω_{m,L}>Ω_m$). The dependence of the abundance of gravitationally bounded objects on local matter density is analyzed.6 pages, 3 figures, proceedings of the 6rd International Conference on Cosmoparticle Physics "Cosmion-2001", oral reportAstrophysicstext