2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/93221A new way to define the operation of P-inversion in the theory with a magnetic charge is presented.6 pages, LaTex, talk at the BARUT Memorial Conference on Group Theory in Physics (Edirne, Turkey, 21-27 December 1995)Quantum Physicstext