Relation between the Kadometsev-Petviashvili equation and the confocal involutive system

Cewen Cao*, Yongtang Wu, Xianguo Geng

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

257 Citations (Scopus)
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The special quasiperiodic solution of the (2 + 1)-dimensional Kadometsev-Petviashvili equation is separated into three systems of ordinary differential equations, which are the second, third, and fourth members in the well-known confocal involutive hierarchy associated with the nonlinearized Zakharov-Shabat eigenvalue problem. The explicit theta function solution of the Kadometsev-Petviashvili equation is obtained with the help of this separation technique. A generating function approach is introduced to prove the involutivity and the functional independence of the conserved integrals which are essential for the Liouville integrability.

This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Cewen Cao, Yongtang Wu, Xianguo Geng; Relation between the Kadometsev–Petviashvili equation and the confocal involutive system. J. Math. Phys. 1 August 1999; 40 (8): 3948–3970. and may be found at

Original languageEnglish
Pages (from-to)3948-3970
Number of pages23
JournalJournal of Mathematical Physics
Issue number8
Publication statusPublished - Aug 1999
Externally publishedYes

Scopus Subject Areas

  • Statistical and Nonlinear Physics
  • Mathematical Physics


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