2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/228855We show that partition functions of various matrix models can be obtained by acting on elementary functions with exponents of W-operators. A number of illustrations is given, including the Gaussian Hermitian matrix model, Hermitian model in external field and the Hurwitz-Kontsevitch model, for which we suggest an elegant matrix-model representation. In all these examples, the relevant W-operators belong to the W_3-algebra.30 pagesHigh Energy Physics - Theorytext