Max-Plus Algebra for Complex Variables and Its Application to Discrete Fourier Transformation

Details Max-Plus Algebra for Complex Variables and Its Application to Discrete Fourier Transformation Max-Plus Algebra for Complex Variables and Its Application to Discrete Fourier Transformation

2005-05-26

arxiv.org/abs/nlin/0505056v1

Nonlinear Sciences

Exactly Solvable and Integrable Systems

Scientific paper

10.1143/JPSJ.75.064001

A generalization of the max-plus transformation, which is known as a method to derive cellular automata from integrable equations, is proposed for complex numbers. Operation rules for this transformation is also studied for general number of complex variables. As an application, the max-plus transformation is applied to the discrete Fourier transformation. Stretched coordinates are introduced to obtain the max-plus transformation whose imaginary part coinsides with a phase of the discrete Fourier transformation.

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