On a class of 2D integrable lattice equations

E. V. Ferapontov, I. T. Habibullin, M. N. Kuznetsova +1

We develop a new approach to the classification of integrable equations of the form $$u_{xy}=f(u,u_x,u_y,{△}_{z}u{△}_{\bar{z}}u,{△}_{z\bar{z}}u),$$ where $\tr…