2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/34886The goal of this paper is to present the physics behind Brill initial data sets as an excellent tool for numerical experiments of axisymmetric spacetimes, data sets which are practical applications of HPC for numerical solutions of Einstein's vacuum equations.5 pages, 1 figureGeneral Relativity and Quantum Cosmologytext