Discrete KP Equation and Momentum Mapping of Toda System

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Abstract

A new approach to discrete KP equation is considered, starting from the Gelfand-Zakhharevich theory for the research of Casimir function for Toda Poisson pencil. The link between the usual approach through the use of discrete Lax operators, is emphasized. We show that these two different formulations of the discrete KP equation are equivalent and they are different representations of the same equations. The relation between the two approaches to the KP equation is obtained by a change of frame in the space L-n of upper truncated Laurent series and translated into the space D-n of shift operators.
Lingua originaleEnglish
pagine (da-a)209-222
Numero di pagine14
RivistaJournal of Nonlinear Mathematical Physics
Volume10
Stato di pubblicazionePublished - 2003

All Science Journal Classification (ASJC) codes

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  • ???subjectarea.asjc.2600.2610???

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