2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/166910A divergence-free approach to relativistic quantum electrodynamics based on regularisation of equations of quantum mechanics is discussed. This approach is shown to be exactly equivalent to the conventional Feynman-Dyson renormalisation techniques.Quantum PhysicsOther Condensed MatterHigh Energy Physics - TheoryMathematical PhysicsRegularisation as a quantised low-pass filtertext