2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/53436The spin-projector operators for symmetric rank-2 tensors are reassessed in connection with the issue of topologically massive gravity. The original proposal by Barnes and Rivers is generalised to account for D-dimensional Einstein gravity and 3-dimensional Chern-Simons massive gravitation.Latex 10 pagesHigh Energy Physics - Theorytext