Li, S, Nijhoff, FW, Sun, Y-Y et al. (1 more author) (2021) Symmetric discrete AKP and BKP equations. Journal of Physics A: Mathematical and Theoretical. ISSN 1751-8113
Abstract
We show that when KP (Kadomtsev-Petviashvili) tau functions allow special symmetries, the discrete BKP equation can be expressed as a linear combination of the discrete AKP equation and its reflected symmetric forms. Thus the discrete AKP and BKP equations can share the same tau functions with these symmetries. Such a connection is extended to 4 dimensional (i.e. higher order) discrete AKP and BKP equations in the corresponding discrete hierarchies. Various explicit forms of such tau functions, including Hirota's form, Gramian, Casoratian and polynomial, are given. Symmetric tau functions of Cauchy matrix form that are composed of Weierstrass σ functions are investigated. As a result we obtain a discrete BKP equation with elliptic coefficients.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 IOP Publishing Ltd. This is an author-created, un-copyedited version of an article published in Journal of Physics A: Mathematical and Theoretical. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.1088/1751-8121/abd998 |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mathematics (Leeds) > Applied Mathematics (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 14 Jan 2021 10:45 |
Last Modified: | 07 Jan 2022 01:40 |
Status: | Published online |
Publisher: | IOP Publishing |
Identification Number: | 10.1088/1751-8121/abd998 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:169935 |