Hirota's Bilinear Method and its Generalization
1997 ◽
Vol 12
(01)
◽
pp. 43-51
◽
Keyword(s):
We review Hirota's bilinear method for constructing multisoliton solutions, its use in searching for new soliton equations, and its generalization to higher multi-linearity using gauge invariance as the determining property. Hirota's method is relevant even when a soliton solution is not the object of the study, as an example we show how it clarifies the singularity structure of the discrete Painlevé I equation.