2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/189425The known extended algebras associated with p-branes are shown to be generated as topological charge algebras of the standard p-brane actions. A representation of the charges in terms of superspace forms is constructed. The charges are shown to be the same in standard/extended superspace formulations of the action.22 pages. Typos fixed, refs added. Minor additions to comments sectionHigh Energy Physics - Theorytext