2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/78473An afinne-invariant view of generating functions of symplectic transformations of an affine symplectic space is discussed. More generally, it works for symmetric symplectic spaces. The note is completely elementary, but it yields some nice pictures.2 pages, 4 figuresSymplectic Geometrytext