2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/17896In these lecture notes, we give an overview about non-local field-theories and their application to polymerized membranes, i.e. membranes with a fixed internal connectivity. The main technical tool is the multi-local operator product expansion (MOPE), generalizing ideas from local field theories to the multi-local situation.Dedicated to Hagen Kleinert at the occasion of his 60th birthdayCondensed Mattertext