2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/131787We show that for each M-theory background, having subspaces with metrics of given type, there exist M2-brane configurations, which in appropriate limit lead to two-spin magnon-like energy-charge relations, established for strings on AdS_5 x S^5, its beta-deformation, and for membrane in AdS_4 x S^7.LaTeX, 8 pages, no figures;v2:11 pages, examples and references addedHigh Energy Physics - Theorytext