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We extend Gesztesy-Holden's method to 2+1 dimensional case to obtain a unified construction to the algebro-geometric solutions of the whole modified Kadomtsev-Petviashvili (mKP) hierarchy. Our tools include the relations between solutions…

Exactly Solvable and Integrable Systems · Physics 2014-11-14 Peng Zhao , Engui Fan

This paper is dedicated to provide theta function representation of algebro-geometric solutions and related crucial quantities for the Hunter-Saxton (HS) hierarchy through studying a algebro-geometric initial value problem. Our main tools…

Exactly Solvable and Integrable Systems · Physics 2012-07-04 Yu Hou , Engui Fan , Peng Zhao

We provide a detailed treatment of Ruijsenaars-Toda (RT) hierarchy with special emphasis on its the theta function representation of all algebro-geometric solutions. The basic tools involve hyperelliptic curve $\mathcal{K}_p$ associated…

Exactly Solvable and Integrable Systems · Physics 2015-06-04 Peng Zhao , Engui Fan , Yu Hou

This paper is dedicated to provide theta function representation of algebro-geometric solutions and related crucial quantities for the modified Camassa-Holm (MCH) hierarchy through %and studying a algebro-geometric initial value problem.…

Exactly Solvable and Integrable Systems · Physics 2012-07-04 Yu Hou , Engui Fan , Zhijun Qiao

An extension of the Kadomtsev-Petviashvili (KP) hierarchy defined via scalar pseudo-differential operators was studied in [16, 20]. In this paper, we represent the extended KP hierarchy into the form of bilinear equation of (adjoint)…

Exactly Solvable and Integrable Systems · Physics 2021-08-06 Jiaping Lu , Chao-Zhong Wu

We study a Kadomtsev-Petviashvili system for the local Camassa-Holm hierarchy obtaining a candidate to the Baker-Akhiezer function for its first reduction generalizing the local Camassa-Holm. We focus our attention on the differences with…

Exactly Solvable and Integrable Systems · Physics 2008-04-24 Giovanni Ortenzi

This paper is dedicated to provide theta function representations of algebro-geometric solutions and related crucial quantities for the two-component Camassa-Holm Dym (CHD2) hierarchy. Our main tools include the polynomial recursive…

Exactly Solvable and Integrable Systems · Physics 2015-06-22 Yu Hou , Engui Fan

Though completely integrable Camassa-Holm (CH) equation and Degasperis-Procesi (DP) equation are cast in the same peakon family, they possess the second- and third-order Lax operators, respectively. From the viewpoint of algebro-geometrical…

Exactly Solvable and Integrable Systems · Physics 2012-11-27 Yu Hou , Peng Zhao , Engui Fan , Zhijun Qiao

This paper is dedicated to provide theta function representations of algebro-geometric solutions and related crucial quantities for the two-component Hunter-Saxton (HS2) hierarchy through studying an algebro-geometric initial value problem.…

Exactly Solvable and Integrable Systems · Physics 2015-06-22 Yu Hou , Engui Fan

We derive theta function representation of algebro-geometric solution of a Coupled Burgers equation which the second nonlinear evolution equation in a hierarchy. We also derive the algebro-geometric characters of the meromorphic function…

Exactly Solvable and Integrable Systems · Physics 2014-06-25 Hongfei Pan , Tiecheng Xia

Quasi-symmetric functions show up in an approach to solve the Kadomtsev-Petviashvili (KP) hierarchy. This moreover features a new nonassociative product of quasi-symmetric functions that satisfies simple relations with the ordinary product…

Mathematical Physics · Physics 2009-01-19 Aristophanes Dimakis , Folkert Muller-Hoissen

Algebro-geometric solutions for the discrete Chen-Lee-Liu (CLL) system are derived in this paper. We construct a nonlinear integrable symplectic map which is used to define discrete phase flows. Compatibility of the maps with different…

Exactly Solvable and Integrable Systems · Physics 2025-03-04 Xiaoxue Xu , Decong Yi , Xing Li , Da-jun Zhang

This paper develops a hybridizable discontinuous Galerkin method for the two-dimensional Camassa--Holm--Kadomtsev--Petviashvili equation. The method employs Cartesian meshes with tensor-product polynomial spaces, enabling separate treatment…

Numerical Analysis · Mathematics 2026-01-21 Mukul Dwivedi , Ruben Gutendorf , Andreas Rupp

We study algebro-geometric (finite-gap) and elliptic solutions of fully discretized KP or 2D Toda equations. In bilinear form they are Hirota's difference equation for $\tau$-functions. Starting from a given algebraic curve, we express the…

High Energy Physics - Theory · Physics 2009-10-30 I. Krichever , P. Wiegmann , A. Zabrodin

A characterization of the Kadomtsev-Petviashvili hierarchy of type C (CKP) in terms of the KP tau-function is given. Namely, we prove that the CKP hierarchy can be identified with the restriction of odd times flows of the KP hierarchy on…

Exactly Solvable and Integrable Systems · Physics 2021-06-09 I. Krichever , A. Zabrodin

We give the solution to the complete noncommutative Kadomtsev--Petviashvili (KP) hierarchy. We achieve this via direct linearisation which involves the Gelfand--Levitan--Marchenko (GLM) equation. This is a linear integral equation in which…

Exactly Solvable and Integrable Systems · Physics 2025-10-03 Gordon Blower , Simon J. A. Malham

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…

Exactly Solvable and Integrable Systems · Physics 2020-09-10 Shangshuai Li , Frank W. Nijhoff , Ying-ying Sun , Da-jun Zhang

This is a short review of the construction of quasi-periodic (algebraic-geometrical) solutions to hierarchies of nonlinear integrable equations. As is well known, the solutions are expressed through Riemann's theta-functions associated with…

Exactly Solvable and Integrable Systems · Physics 2023-09-13 A. Zabrodin

We continue a recently developed systematic approach to the Bousinesq (Bsq) hierarchy and its algebro-geometric solutions. Our formalism includes a recursive construction of Lax pairs and establishes associated Burchnall-Chaundy curves,…

solv-int · Physics 2015-06-26 Ronnie Dickson , Fritz Gesztesy , Karl Unterkofler

This paper aims at providing an exact algebro-geometric solution of the modified Camassa-Holm (mCH) equation derived from hyperelliptic curves in $4(p+q)-1$ genus. To achieve this goal, we construct the Riemann-Hilbert problems cosponsoring…

Mathematical Physics · Physics 2025-03-04 Engui Fan , Gaozhan Li , Yiling Yang
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