Ak. Pattanayak et Wc. Schieve, PREDICTING 2-DIMENSIONAL HAMILTONIAN CHAOS, Zeitschrift fur Naturforschung. A, A journal of physical sciences, 52(1-2), 1997, pp. 34-36
We use geometrical analysis to show that the Toda-Brumer-Duff criterio
n for transition to chaos is a simple application of Jacobi's equation
. Further, we propose a new criterion for this transition for two-dime
nsional hamiltonian systems and summarize the results.