2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/188054Starting with the Dirac equation in the extreme Kerr metric we derive an integral representation for the propagator of solutions of the Cauchy problem with initial data in the class of smooth compactly supported functions.9 pages, one more reference addedGeneral Relativity and Quantum Cosmologytext