2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/79819Direct computation of the transition time between neighbor resonances in the standard map, as a function of the perturbation parameter $K$, allows for improving the accuracy of the critical perturbation value up to $K_{cr}-K_g < 2.5\times 10^{-4}$ that is by a factor of about 50 as compared to the previous result due to MacKay and Percival.9 pages, 3 figuresChaotic Dynamicstext