2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/41894Classification of effects of violation of seven symmetries -- C, P, T, CP, PT, TC, and CPT -- is discussed. A graphic mnemonic scheme -- CPT-cube -- is suggested and illustrated by simple examples.9 pages, 8 .eps figures, latex style file blois2002.tex, Talk at the Conference XIVth Rencontres de Blois 16th-22nd June 2002 "Matter-antimatter asymmetry", Chateau de Blois (France)High Energy Physics - Phenomenologytext