2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/58293Apparently new expressions are given for the exponential of a hermitian matrix,A, in the 2x2,3x3,and 4x4 cases. Replacing A by iA these are explicit formulas for the Fourier transform of exp(iA).5 pages, added some detailsMathematical PhysicsHigh Energy Physics - PhenomenologyHigh Energy Physics - TheoryRepresentation Theorytext