2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/197962The excessiveness of integration-by-part (IBP) identities is discussed. The Lie-algebraic structure of the IBP identities is used to reduce the number of the IBP equations to be considered. It is shown that Lorentz-invariance (LI) identities do not bring any information additional to that contained in the IBP identities, and therefore, can be discarded.6 pages, RevTeX. Version, published in JHEP, references correctedHigh Energy Physics - Phenomenologytext