2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/54865Virasoro-type symmetries and their roles in solvable models are reviewed. These symmetries are described by the two-parameter Virasoro-type algebra $Vir_{p,q}$ by choosing the parameters p and q suitably.LaTeX file, 35 pagesHigh Energy Physics - Theorytext