This volume publishes the thesis of Katalin Káldi DLA in the series Art as Research of the Doctoral School of the Hungarian University of Fine Arts. The author herself is a creative artist, exploring the significance of numbers and repetitions, her book is rich in illustrative material, from Van Dyck, Caravaggio, Titian, Matisse, to Duchamp, Bruce Nauman, Katharina Fritsch and many more. A separate set of examples is linked to the figures (from 1 to 7) that feature prominently in the works of art. It also addresses the issue of repetition, which is linked to the many and the innumerable. Egyéb információ: In Hungarian: A számos és a számtalan