2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/228018Using a variational approximation we study discrete solitons of a nonlinear Schroedinger lattice with a cubic-quintic nonlinearity. Using an ansatz with six parameters we are able to approximate bifurcations of asymmetric solutions connecting site-centered and bond-centered solutions and resulting in the exchange of their stability. We show that the numerically exact and variational approximations are quite close for solitons of small powers.12 Pages, 7 figuresPattern Formation and Solitonstext