2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/137921We investigate proper biharmonic hypersurfaces with at most three distinct principal curvatures in space forms. We obtain the full classification of proper biharmonic hypersurfaces in 4-dimensional space forms.10 pagesDifferential Geometry58E20Biharmonic Hypersurfaces in 4-Dimensional Space Formstext