Lagrangian multiform structure for the lattice KP system
نویسندگان
چکیده
We present a Lagrangian for the bilinear discrete KP (or HirotaMiwa) equation. Furthermore, we show that this Lagrangian can be extended to a Lagrangian 3-form when embedded in a higher dimensional lattice, obeying a closure relation. Thus we establish the multiform structure as proposed in [8] in a higher dimensional case.
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