2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/49963We review several aspects of Yang-Mills theory (YMT) in two dimensions, related to its perturbative and topological properties. Consistency between light-front and equal-time formulations is thoroughly discussed.16 pages, REVTEX. To appear in the proceedings of the CSSM Workshop on Light-Cone QCD and Nonperturbative Hadron Physics, Adelaide, Australia, Dec. 13-21, 1999High Energy Physics - TheoryHigh Energy Physics - PhenomenologyLight-front vacuum and instantons in two dimensionstext