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Two cubic B-spline functions from different families are placed to the collocation method for the numerical solutions to the Gardner equation.Four models describing propagation of bell shaped single solitary, travel of a kink type wave,…

Numerical Analysis · Mathematics 2017-03-02 Ozlem Ersoy Hepson , Alper Korkmaz , Idiris Dag

An integrable extension of the Kadomtsev-Petviashvili (KP) and Davey-Stewartson (DS) equations is investigated in this paper.We will refer to this integrable extension as the (4+1)-dimensional Fokas equation. The determinant expressions of…

Exactly Solvable and Integrable Systems · Physics 2020-07-28 Yulei Cao , Jingsong He , Yi Cheng , Dumitru Mihalache

Bilevel optimization formulates hierarchical decision-making processes that arise in many real-world applications such as in pricing, network design, and infrastructure defense planning. In this paper, we consider a class of bilevel…

Optimization and Control · Mathematics 2021-04-20 Geunyeong Byeon , Pascal Van Hentenryck

In computer vision, many problems such as image segmentation, pixel labelling, and scene parsing can be formulated as binary quadratic programs (BQPs). For submodular problems, cuts based methods can be employed to efficiently solve…

Computer Vision and Pattern Recognition · Computer Science 2016-11-17 Peng Wang , Chunhua Shen , Anton van den Hengel , Philip H. S. Torr

Many computer vision problems can be formulated as binary quadratic programs (BQPs). Two classic relaxation methods are widely used for solving BQPs, namely, spectral methods and semidefinite programming (SDP), each with their own…

Computer Vision and Pattern Recognition · Computer Science 2016-11-18 Peng Wang , Chunhua Shen , Anton van den Hengel

This paper develops a modification of the dressing method based on the inhomogeneous linear integral equation with integral operator having nonempty kernel. Method allows one to construct the systems of multidimensional Partial Differential…

Exactly Solvable and Integrable Systems · Physics 2009-11-11 A. I. Zenchuk

In this paper, a quantum dot mathematical model based on a two-dimensional Schr\"odinger equation assuming the 1/r inter-electronic potential is revisited. Generally, it is argued that the solutions of this model obtained by solving a…

Quantum Physics · Physics 2021-10-19 Francisco Caruso , Vitor Oguri , Felipe Silveira

The usual dispersionless limit of the KP hierarchy does not work in the case where the dependent variable has values in a noncommutative (e.g. matrix) algebra. Passing over to the potential KP hierarchy, there is a corresponding scaling…

Exactly Solvable and Integrable Systems · Physics 2008-06-12 Aristophanes Dimakis , Folkert Muller-Hoissen

A noncommutative version of the KP equation and two families of its solutions expressed as quasideterminants are discussed. The origin of these solutions is explained by means of Darboux and binary Darboux transformations. Additionally, it…

Exactly Solvable and Integrable Systems · Physics 2007-05-23 C. R. Gilson , J. J. C. Nimmo

The soliton solutions of the Degasperis-Procesi equations are constructed by the implementation of the dressing method. The form of the one and two soliton solutions coincides with the form obtained by Hirota's method.

Exactly Solvable and Integrable Systems · Physics 2017-02-16 Adrian Constantin , Rossen Ivanov

In this paper, we investigate the forward problems on the data-driven rational solitons for the (2+1)-dimensional KP-I equation and spin-nonlinear Schr\"odinger (spin-NLS) equation via the deep neural networks leaning. Moreover, the inverse…

Pattern Formation and Solitons · Physics 2021-12-30 Zijian Zhou , Li Wang , Zhenya Yan

New extensions of the KP and modified KP hierarchies with self-consistent sources are proposed. The latter provide new generalizations of $(2+1)$-dimensional integrable equations, including the DS-III equation and the $N$-wave problem.…

Exactly Solvable and Integrable Systems · Physics 2015-04-13 Oleksandr Chvartatskyi , Yuriy Sydorenko

Two-body scattering is studied by solving the Lippmann-Schwinger equation in momentum space without angular-momentum decomposition for a local spin dependent short range interaction plus Coulomb. The screening and renormalization approach…

Nuclear Theory · Physics 2008-11-26 M. Rodriguez-Gallardo , A. Deltuva , E. Cravo , R. Crespo , A. C. Fonseca

We introduce a novel spatio-temporal discretization for nonlinear Fokker-Planck equations on the multi-dimensional unit cube. This discretization is based on two structural properties of these equations: the first is the representation as a…

Numerical Analysis · Mathematics 2016-01-11 Oliver Junge , Daniel Matthes , Horst Osberger

We describe a general methods to localize any sort of k-separability and therefore also the corresponding partial entanglement in genuinely multipartite mixed quantum states. Our methods are based exclusively on the known twopartite methods…

Quantum Physics · Physics 2010-03-02 Roman Gielerak Marek Sawerwain

Interactions of noncommutative waves and solitons in 2+1 dimensions can be analyzed exactly for a supersymmetric and integrable U(n) chiral model extending the Ward model. Using the Moyal-deformed dressing method in an antichiral…

High Energy Physics - Theory · Physics 2008-11-26 Christian Gutschwager , Tatiana A. Ivanova , Olaf Lechtenfeld

In the paper we develop the dressing method for the solution of the two-dimensional periodic Volterra system with a period N. We derive soliton solutions of arbitrary rank $k$ and give a full classification of rank 1 solutions. We have…

Exactly Solvable and Integrable Systems · Physics 2017-04-26 Rhys Bury , Alexander V. Mikhailov , Jing Ping Wang

As more and more numerical and analytical solutions to the linear neutron transport equation become available, verification of numerical results is increasingly important. This presentation concerns the development of another benchmark for…

Computational Physics · Physics 2024-06-21 Barry Ganapol

Neural networks are increasingly used to construct numerical solution methods for partial differential equations. In this expository review, we introduce and contrast three important recent approaches attractive in their simplicity and…

Numerical Analysis · Mathematics 2021-04-15 Jan Blechschmidt , Oliver G. Ernst

The quasi-classical $\bar{\partial}$-dressing method is used to derive compact generating equations for dispersionless hierarchies. Dispersionless Kadomtsev-Petviashvili (KP) and two-dimensional Toda lattice (2DTL) hierarchies are…

Exactly Solvable and Integrable Systems · Physics 2007-05-23 L. V. Bogdanov , B. G. Konopelchenko , L. Martinez Alonso
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