本文借助于Bell多项式研究经典Boussinesq方程,将其转换成Hirota双线性形式,构造了带参数的B(a|¨)cklund变换,进而重新导出了其Lax表示.
The classical Boussinesq equation is revisited. By means of Bell polynomials, this equation is bilinearized. Furthermore, a Backlund transformation, consisting of four equations with an essential parameter, is constructed for it. Also, its Lax pair is recovered.