2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/149320We compute the renormalized trajectory of $ϕ^4_4$-theory by perturbation theory in a running coupling. We use an exact infinitesimal renormalization group. The expansion is put into a form which is manifestly independent of the scale parameter.39 pages LaTeX2e, some misprints correctedHigh Energy Physics - TheoryHigh Energy Physics - LatticeThe renormalized $ϕ^4_4$-trajectory by perturbation theory in a running coupling using partial differential equationstext