FNFT: A software library for computing nonlinear Fourier transforms

Sander Wahls, Shrinivas Chimmalgi, Peter J. Prins

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Abstract

The conventional Fourier transform was originally developed in order to solve the heat equation, which is a standard example for a linear evolution equation. Nonlinear Fourier transforms (NFTs)1 are generalizations of the conventional Fourier transform that can be used to solve certain nonlinear evolution equations in a similar way (Ablowitz et al. 1974). An important difference to the conventional Fourier transform is that NFTs are equationspecific. The Korteweg-de Vries (KdV) equation (Gardner et al. 1967) and the nonlinear Schroedinger equation (NSE) (Shabat and Zakharov 1972) are two popular examples for nonlinear evolution equations that can be solved using appropriate NFTs.
Original languageEnglish
Article number597
Number of pages2
JournalJournal of Open Source Software
Volume3
Issue number23
DOIs
Publication statusPublished - 2018

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