Bäcklund transformations and nonlocal symmetries. (English. Russian original) Zbl 0659.35092
Sov. Math., Dokl. 36, No. 3, 393-395 (1988); translation from Dokl. Akad. Nauk SSSR 297, 11-14 (1987).
We propose a method of constructing nonlocal symmetries of differential equations based on Bäcklund transformations and the theory of Lie- Bäcklund groups.
MSC:
| 35Q99 | Partial differential equations of mathematical physics and other areas of application |
| 35A30 | Geometric theory, characteristics, transformations in context of PDEs |
