2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/58271We describe a new algebraic multisymplectic formulation of the classical BRST symmetry. The analogue of Marsden-Weinstein reduction for multisymplectic manifolds is described. We then give a homological description of Multisymplectic Marsden-Weinstein reduction.14 pages, amsart, using the package xy-picMathematical PhysicsGeneral Relativity and Quantum CosmologyHigh Energy Physics - TheoryDifferential GeometryDynamical SystemsQuantum Physics53,14On a Multisymplectic Formulation of the Classical BRST symmetry for First Order Field Theories Part I: Algebraic Structurestext