2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/185509We propose a technique called dimensional descent to show that Wigner's little group for massless particles, which acts as a generator of gauge transformation for usual Maxwell theory, has an identical role even for topologically massive gauge theories. The examples of $B\wedge F$ theory and Maxwell-Chern-Simons theory are analyzed in details.LaTex, revised version shortened to 9 pages; To appear in Jour.Phys.AHigh Energy Physics - Theorytext