A Bäcklund transformation and nonlinear superposition formula for the Belov-Chaltikian lattice

1998 ◽  
Vol 31 (20) ◽  
pp. 4755-4761 ◽  
Author(s):  
Xing-Biao Hu ◽  
Zuo-Nong Zhu
2002 ◽  
Vol 44 (1) ◽  
pp. 121-128 ◽  
Author(s):  
Xing-Biao Hu ◽  
Johan Springael

AbstractA hierarchy of bilinear Lotka-Volterra equations with a unified structure is proposed. The bilinear Bäcklund transformation for this hierarchy and the corresponding canonical Lax pair are obtained. Furthermore, the nonlinear superposition formula is proved rigorously.


2016 ◽  
Vol 71 (5) ◽  
pp. 427-431 ◽  
Author(s):  
Xiaoxing Niu ◽  
Mengxia Zhang ◽  
Shuqiang Lv

AbstractA system proposed by Ito is reconsidered. The corresponding Darboux transformation is presented explicitly. The resulted Bäcklund transformation is shown to be equivalent to the one found by Hirota. Also, a nonlinear superposition formula, which is of differential-algebraic, is obtained.


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