A class of multidimensional integrable hierarchies and their reductions
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We consider a class of multidimensional integrable hierarchies connected with the commutativity of general (unreduced) (N+1)-dimensional vector fields containing a derivative with respect to a spectral variable. These hierarchies are determined by a generating equation, equivalent to the Lax-Sato form. We present a dressing scheme based on a nonlinear vector Riemann problem for this class. As characteristic examples, we consider the hierarchies connected with the Manakov-Santini equation and the Dunajski system.
Keywordsintegrable hierarchy dispersionless equation heavenly equation dressing method
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