2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/46420As a precursor to work on QCD, we study the dressed electron in QED nonperturbatively. The calculational scheme uses an invariant mass cutoff, discretized light-cone quantization, a Tamm--Dancoff truncation of the Fock space, and a small photon mass. Nonperturbative renormalization of the coupling and electron mass is developed.Latex, 4 pages, 1 figureHigh Energy Physics - Phenomenologytext