2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/123781We give a necessary and sufficient condition for lagrangians in a symplectic vector bundle to be deformed stably into transversal lagrangians. In the case of three lagrangians, we show that the associated Grothendieck group can be identified with a Hermitian K-theory group.7 pages ; see also http://www.math.jussieu.fr/~karoubi/Differential GeometryK-Theory and Homology55R10text