2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/173313We will show the usefulness of the tools of Symplectic and Presymplectic Geometry and the corresponding Lie algebraic methods in different problems in Geometric Optics.Latex file, 6 pages. Talk given at V Int Congress on Squeezed States and Uncertainty Relations. Balaton (Hungary). May 1997OpticsMathematical Physicstext