Abstract:
The Sylvester equation plays an important role in many branches of mathematical physics. The goal of this paper is to show that a special case of the Sylvester equation can be related to the lattice B-type Kadomtsev–Petviashvili (BKP) system via the generalized Cauchy matrix method. We use the variables given in the Sylvester equation to define the ττ function and several scalar functions that are closely related to the lattice BKP equation. After rederiving the lattice BKP equation, we make it clear that besides its multisoliton solutions, various other types of exact solutions also exist. Furthermore, Lax pairs for the lattice BKP equation are obtained in different ways.
This project is supported by the National
Natural Science Foundation of China (grant Nos. 12001369
and 12071432) and Shanghai Sailing Program (grant No. 20YF1433000).
Ying-ying Sun, Xinyi Wang, Da-jun Zhang, “New solutions of the lattice Kadomtsev–Petviashvili system associated with an elliptic curve”, Reports on Mathematical Physics, 94:1 (2024), 11
Siting Yu, Jingjing Peng, Zengao Tang, Zhenyun Peng, “Iterative methods to solve the constrained Sylvester equation”, MATH, 8:9 (2023), 21531