2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/89825In this paper we obtained for the Higgs algebra three kinds of single-mode realizations such as the unitary Holstein-Primakoff-like realization, the non-unitary Dyson-like realization and the unitary realization based upon Villain-like realization. The corresponding similarity transformations between the Holstein-Primakoff-like realizations and the Dyson-like realizations are revealed.10 Pages, LaTexQuantum Physicstext