20 октября. Семинар по анализу: доклад Сергея Куксина

Abstract:  The two approaches, mentioned in the title, are: write the perturbed equation in the action-angle variables and then average the obtained fast/slow system,  or alternatively, inspired by the Krylov--Bogolyubov work, reduce the task to averaging of a "suitably guessed" auxiliary system in the original space, with fast rotating coefficients. I will explain that the second approach has significant advantages compare to the first. The talk is based on a joint work with Huang Guan and Andrey Piatnitski.

YouTube:  http://www.youtube.com/@mathematicsathse1021

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