Abstract
The discrete KP, or l-Toda lattice hierarchy, is the same as a properly defined modified KP hierarchy.
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Dickey, L.A. Modified KP and Discrete KP. Letters in Mathematical Physics 48, 277–289 (1999). https://doi.org/10.1023/A:1007647118522
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DOI: https://doi.org/10.1023/A:1007647118522