Abstract
The present paper studies the forced damped pendulum equation, equipped with Hubbard’s parameters (Hubbard in Am Math Mon 8:741–758, 1999). With the aid of rigorous computations, his 1999 conjecture on the existence of chaos was proved in Banhelyi et al. (SIAM J Appl Dyn Syst 7:843–867, 2008) but the problem of finding chaotic trajectories remained entirely open. In order to approximate a wide range of chaotic trajectories with arbitrary precision, the present paper establishes an optimization method capable to locate finite trajectory segments with prescribed geometrical behavior.
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