2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/17252We review the papers on the Jordan-Wigner transformation in two dimensions to comment on a possibility of examining the statistical mechanics properties of two-dimensional spin-1/2 models. We discuss in some detail the two-dimensional spin-1/2 isotropic XY and Heisenberg models.19 pages, 10 figures includedCondensed Mattertext