On the theory of recursion operator

V. E. Zakharov, B. G. Konopelchenko

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)


The general structure and properties of recursion operators for Hamiltonian systems with a finite number and with a continuum of degrees of freedom are considered. Weak and strong recursion operators are introduced. The conditions which determine weak and strong recursion operators are found. In the theory of nonlinear waves a method for the calculation of the recursion operator, which is based on the use of expansion into a power series over the fields and the momentum representation, is proposed. Within the framework of this method a recursion operator is easily calculated via the Hamiltonian of a given equation. It is shown that only the one-dimensional nonlinear evolution equations can posses a regular recursion operator. In particular, the Kadomtsev-Petviashvili equation has no regular recursion operator.

Original languageEnglish
Pages (from-to)483-509
Number of pages27
JournalCommunications in Mathematical Physics
Issue number4
Publication statusPublished - Dec 1984
Externally publishedYes


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