2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/115410We show that the infinite cyclic cover of the exterior of the untwisted Whitehead double of a non-trivial knot does not embed in any compact 3-manifold, answering a question of Jiang, Ni, Wang and Zhou.3 pages, 3 figures, amslatexGeometric Topology57M25On embedding infinite cyclic covers in compact 3-manifoldstext