2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/51451When we have noncommutativity among coordinates (or conjugate momenta), we consider Wigner's formulation of quantum mechanics, including a new derivation of path integral formula. We also propose the Moyal star product based on the Dirac bracket in constrained systems.10 pages, No figures, LatexHigh Energy Physics - Theorytext