2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/136160We give in the present work a new methodology that allows to give isoperimetric proofs, for Kneser's Theorem and Kemperman's structure Theory and most sophisticated results of this type. As an illustration we present a new proof of Kneser's Theorem.13 pagesNumber Theory11P70 (Primary); 11B75, 05D99 (Secondary)The global isoperimetric methodology applied to Kneser's Theoremtext