“…The same results are valid in PT, for the action of an orthogonal dichroic device of strength p d on a P-sphere Σ Moreover, the same results are valid in all of the fields and problems whose underpinning algebra is that of Lorentz transformation, e.g., multilayer optics [18][19][20][21][22][23][24], geometrical optics [25,26], laser cavities [27], and quantum optics [28]. After identifying the corresponding Poincaré vectors, one applies Equation 7, which leads to the same conclusions, in physical terms corresponding to the investigated fields.…”