2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/40705We study a mechanism of symmetry reduction in a higher-dimensional field theory upon orbifold compactification. Split multiplets appear unless all components in a multiplet of a symmetry group have a common parity on an orbifold. A gauge transformation property is also examined.11 pages, LatexHigh Energy Physics - Phenomenologytext