2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/52203The local and manifestly covariant Lagrangian interactions in four spacetime dimensions that can be added to a ``free'' model that describes a generic matter theory and an abelian BF theory are constructed by means of deforming the solution to the master equation on behalf of specific cohomological techniques.45 pages, no figuresHigh Energy Physics - Theorytext