Fig. 1. Numerical discretisation on 上的数值离散

Fig. 2. Permutation property of Bäcklund transformationBäcklund变换解的交换性质

Fig. 3. Map and lattice变换与平面网格

Fig. 4. Consistent cube相容立方体

Fig. 5. The consistent cube for the discrete sine-Gordon equation and potential mKdV equation离散sine-Gordon和势mKdV方程的相容立方体

Fig. 6. Cube and octahedron for 3D equations定义3维方程的6面体以及8面体

Fig. 7. 4D consistency around the hyper cube围绕超立方体的4D相容性

Fig. 8. The consistent cube相容立方体