2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/192065We study chiral symmetry breaking in quenched strong-coupling QED$_4$ in arbitrary covariant gauge within the Dyson-Schwinger equation formalism. A recently developed numerical renormalization program is fully implemented. Results are compared for three different fermion-photon proper vertex {\it Ansätze\/}: bare $γ^μ$, minimal Ball-Chiu, and Curtis-Pennington. The procedure is straightforward to implement and numerically stable. We discuss the chiral limit and observe that in this limit the renormalized axial current is conserved. A detailed study of residual gauge dependence due to the vertex choice is in progress. The relevance for lattice studies is discussed.4 pages. Contribution to Lattice 95 proceedings. To appear in Nucl Phys B Suppl. One uuencoded postscript figure. Uses epsfig.sty and espcrc2.sty. Also available as single postscript file at http://www.physics.adelaide.edu.au/theory/home.html or ftp://bragg.physics.adelaide.edu.au/pub/theory/ADP-95-48.T195.psHigh Energy Physics - LatticeHigh Energy Physics - Phenomenologytext