2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/48965A general Lorentz-violating extension of the standard model of particle physics, allowing for both CPT-even and CPT-odd effects, is described. Some of its theoretical aspects and experimental implications are summarized.12 pages, talk presented at the Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, November 1998High Energy Physics - Phenomenologytext