2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/61354In this paper we show that periodic Takahashi 3-manifolds are cyclic coverings of the connected sum of two lens spaces (possibly cyclic coverings of the 3-sphere), branched over knots. When the base space is a 3-sphere, we prove that the associated branching set is a two-bridge knot of genus one, and we determine its type. Moreover, a geometric cyclic presentation for the fundamental groups of these manifolds is obtained in several interesting cases, including the ones corresponding to the branched cyclic coverings of the 3-sphere.12 pages, 5 figures. To appear in Tsukuba Journal of MathematicsGeometric Topology57M12; 57R65text