2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/54219We describe the self-interacting scalar field on the truncated sphere and we perform the quantization using the functional (path) integral approach. The theory posseses a full symmetry with respect to the isometries of the sphere. We explicitely show that the model is finite and the UV-regularization automatically takes place.19 pages, LaTeXHigh Energy Physics - Theorytext