2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/56480This is a short comment on the Moyal formula for deformation quantization. It is shown that the Moyal algebra of functions on the plane is canonically isomorphic to an algebra of matrices of infinite size.LaTeX, 5 pages; some typos correctedMathematical PhysicsHigh Energy Physics - TheoryQuantum Algebratext