2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/13397The large supercluster structures obvious in recent galaxy redshift surveys are quantified using an one-dimensional cluster analysis (core sampling) and a three-dimensional cluster analysis based on the minimal spanning tree. The comparison with the LCRS reveals promising stable results. At a mean overdensity of about ten, the supercluster systems form huge wall-like structures comprising about 40% of all galaxies. The overdense clusters have a low mean transverse velocity dispersion of about 400 km/s, i.e. they look quite narrow in redshift space. We performed N-body simulations with large box sizes for six cosmological scenarios. The quantitative analysis shows that the observed structures can be understood best in low density models with $Ω_m \le 0.5$ with or without a cosmological constant.12 LATEX pages, 4 encapsulated figures, to appear in the Proceedings of 'Observational Cosmology: The Development of Galaxy Systems', Sesto 1998Astrophysicstext