2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/105769A study of conformally flat but non flat Bianchi type I and cylindrically symmetric static space-times according to proper projective symmetry is given by using some algebraic and direct integration techniques. It is shown that the special class of the above space-times admit proper projective vector fields.12 pagesGeneral Relativity and Quantum Cosmologytext