Time-periodic linear boundary value problems on a finite interval

A. S. Fokas, Beatrice Pelloni, David A. Smith

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Abstract

We study the large time behaviour of the solution of a linear dispersive PDEs posed on a finite interval, when the prescribed boundary conditions are time periodic. We use the approach pioneered in \cite{FL2012b} for nonlinear integrable PDEs. and then applied to linear problems on the half-line in \cite{fvdw2021}, to characterise necessary conditions for the solution of such a problem to be periodic, at least in an asymptotic sense. We then fully describe the periodicity properties of the solution in three important illustrative examples, recovering known results for the second-order cases and establishing new ones for the third order one.
Original languageEnglish
JournalQuarterly of Applied Mathematics
Publication statusAccepted/In press - 22 Jan 2022

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