2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/187320A full (triangular) quantum deformation of so(3,2) is presented by considering this algebra as the conformal algebra of the 2+1 dimensional Minkowskian spacetime. Non-relativistic contractions are analysed and used to obtain quantum Hopf structures for the conformal algebras of the 2+1 Galilean and Carroll spacetimes. Relations between the latter and the null-plane quantum Poincaré algebra are studied.9 pages, LaTeXQuantum Algebratext