摘要
For a lattice Boussinesq equation,we introduce a simple-parameter invertible transformation by which the equation is transformed into an extended version.This new equation admits solitons and nonzero quasi-rational solutions,both in Casoratian form.These solutions can be reverted to those of the lattice Boussinesq equation.
基金
the National Natural Science Foundation of China(No 11071157)
SRF of the DPHE of China(No 20113108110002)
Shanghai Leading Academic Discipline Project(No J50101).
