2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/59373We approximate functionals depending on the gradient of $u$ and on the behaviour of $u$ near the discontinuity points, by families of non-local functionals where the gradient is replaced by finite differences. We prove pointwise convergence, $Γ$-convergence, and a compactness result which implies, in particular, the convergence of minima and minimizers.39 pages. to appear on Proc. Royal Soc. Edinb. Ser. AFunctional Analysistext