Large scale structure

I give a review of catalogues of galaxies, clusters of galaxies and supercl usters - sources of information to study the large-scale structure of the U niverse. Thereafter I shall discuss the power spectrum of density perturbat ions, and the correlation function - principal description functions which characterize the large-scale structure. I shall pay special attention to th e geometric interpretation of these functions, i.e. to the way in which the various properties of the distribution of galaxies in systems and systems themselves are reflected in these functions. Finally. I discuss cosmologica l parameters which characterize general properties of the Universe - the Hu bble constant, densities of various populations of the Universe, and parame ters of the power spectrum of galaxies and matter. (C) 2001 Elsevier Scienc e B.V. All rights reserved.