2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/90544A quantitative extension of the Wigner-Araki-Yanase theorem is obtained on the limitation on precise, non-disturbing measurements of observables which do not commute with additive conserved quantities, and applied to obtaining a limitation on the accuracy of quantum computing with computational bases which do not commute with angular momentum.6 pages, LaTeXQuantum Physicstext