2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/55329D0-brane theory on a torus with a nonvanishing B field is embedded into a string theory in the weak coupling limit. It is shown that the usual supersymmetric Yang-Mills theory on a noncommutative torus can not be the whole story. The Born-Infeld action survives the noncommutative torus limit.11 pages, two attached figures, harvmacHigh Energy Physics - Theorytext