2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/50009We report on a detailed calculation of the anomaly coefficients for the odd and even parts of the $Z_2$-graded representation $θ$ of the Lie algebra Lie$ G$ on the exterior algebra of dimension $2^n$ assuming that $G\subset U(n)$. The coefficients vanish provided $G\subset SU(n)$ and $n\ne3$. The singular role of the gauge group SU(3) is emphasized. The Standard Model is covered by this result.9 pages, LaTeX2e, AMS fontsHigh Energy Physics - Theorytext