Additional symmetries and solutions of the dispersionless KP hierarchy

Details Additional symmetries and solutions of the dispersionless KP hierarchy Additional symmetries and solutions of the dispersionless KP hierarchy

2003-02-05

arxiv.org/abs/nlin/0302009v1

Nonlinear Sciences

Exactly Solvable and Integrable Systems

21 pages

Scientific paper

The dispersionless KP hierarchy is considered from the point of view of the twistor formalism. A set of explicit additional symmetries is characterized and its action on the solutions of the twistor equations is studied. A method for dealing with the twistor equations by taking advantage of hodograph type equations is proposed. This method is applied for determining the orbits of solutions satisfying reduction constraints of Gelfand--Dikii type under the action of additional symmetries.

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