2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/55346We treat in this paper non-linear sigma models such as $CP^1$-model, $QP^1$-model and etc, in 1+2 dimensions. For submodels of such ones we definitely construct an infinite number of nontrivial conserved currents. Our result is a generalization of that of authors (Alvarez, Ferreira and Guillen).14 pages, AMSLaTexHigh Energy Physics - Theorytext