Enlarged spectral problems and nonintegrability
classification
🌊 nlin.SI
math-phmath.APmath.MP
keywords
spectralenlargedequationsintegrableproblemscoupleddemonstratedenlarging
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The method of obtaining new integrable coupled equations through enlarging spectral problems of known integrable equations, which was recently proposed by W.-X. Ma, can produce nonintegrable systems as well. This phenomenon is demonstrated and explained by the example of the enlarged spectral problem of the Korteweg - de Vries equation.
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