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The general conditions under which the quadratic, uniform and monotonic convergence in the quasilinearization method of solving nonlinear ordinary differential equations could be proved are formulated and elaborated. The generalization of…

Computational Physics · Physics 2009-11-07 V. B. Mandelzweig , F. Tabakin

We present a new method for the numerical implementation of generating boundary conditions for a one dimensional Boussinesq system. This method is based on a reformulation of the equations and a resolution of the dispersive boundary layer…

Analysis of PDEs · Mathematics 2021-04-14 David Lannes , Lisl Weynans

The Cauchy problem for the linearization of a system of equations arising in the kinetic theory of a condensed gas of bosons near the critical temperature around one of its equilibria is solved for radially symmetric initial data. It is…

Analysis of PDEs · Mathematics 2022-01-19 Miguel Escobedo

We consider the `classical' Boussinesq system in one space dimension and its symmetric analog. These systems model two-way propagation of nonlinear, dispersive long waves of small amplitude on the surface of an ideal fluid in a uniform…

Numerical Analysis · Mathematics 2010-08-26 D. C. Antonopoulos , V. A. Dougalis

We study the existence and numerical computation of traveling wave solutions for a family of nonlinear higher-order Boussinesq evolution systems with a Hamiltonian structure. This general Boussinesq evolution system includes a broad class…

Analysis of PDEs · Mathematics 2025-11-18 Roberto de A. Capistrano-Filho , Juan Carlos Muñoz , José R. Quintero

In this paper a three-parameter family of Boussinesq systems is studied. The systems have been proposed as models of the propagation of long internal waves along the interface of a two-layer system of fluids with rigid-lid condition for the…

Numerical Analysis · Mathematics 2021-10-27 V. A. Dougalis , A. Duran , L. Saridaki

We present a generalized (2+1)-dimensional Boussinesq equation, including two cases which are called the plus Boussinesq equation and the minus one. To investigate these equations, we apply the $\bar{\partial}$ approach to a coupled…

Exactly Solvable and Integrable Systems · Physics 2017-05-02 Junyi Zhu

Boussinesq systems of nonlinear partial differential equations are fundamental equations in geophysical fluid dynamics. In this paper, we use asymmetric ideas and moving frames to solve the two-dimensional Boussinesq equations with partial…

Fluid Dynamics · Physics 2008-07-01 Xiaoping Xu

In the study, the collocation method based on exponential cubic B-spline functions is proposed to solve one dimensional Boussinesq systems numerically. Two initial boundary value problems for Regularized and Classical Boussinesq systems…

Numerical Analysis · Mathematics 2016-09-22 Ozlem Ersoy , Idiris Dag , Alper Korkmaz

Boundary value problems for integrable nonlinear evolution PDEs formulated on the half-line can be analyzed by the unified method introduced by one of the authors and used extensively in the literature. The implementation of this general…

Analysis of PDEs · Mathematics 2015-05-30 A. S. Fokas , J. Lenells

Initial-boundary value problems for 1-dimensional `completely integrable' equations can be solved via an extension of the inverse scattering method, which is due to Fokas and his collaborators. A crucial feature of this method is that it…

Analysis of PDEs · Mathematics 2016-09-07 Dimitra C. Antonopoulou , Spyridon Kamvissis

We consider the unified transform method, also known as the Fokas method, for solving partial differential equations. We adapt and modify the methodology, incorporating new ideas where necessary, in order to apply it to solve a large class…

Analysis of PDEs · Mathematics 2018-08-28 Arran Fernandez , Dumitru Baleanu , Athanassios S. Fokas

Based the homogeneous balance method, a general method is suggested to obtain several kinds of exact solutions for some kinds of nonlinear equations. The validity and reliability of the method are tested by applying it to the Bousseneq…

Chaotic Dynamics · Physics 2007-05-23 Yang lei , Zhu zhengang , Wang yinghai

In this short communication, we announce an algorithmic procedure for constructing non-uniqueness counter-examples of classical solutions to initial-boundary-value problems for a wide class of linear evolution partial differential…

Analysis of PDEs · Mathematics 2025-12-05 Andreas Chatziafratis , Spyridon Kamvissis

We examine the analytic extension of solutions of linear, constant-coefficient initial-boundary value problems outside their spatial domain of definition. We use the Unified Transform Method or Method of Fokas, which gives a representation…

Analysis of PDEs · Mathematics 2022-06-22 Matthew Farkas , Jorge Cisneros , Bernard Deconinck

The theory of Gaussian quantum fluctuations around classical steady states in nonlinear quantum-optical systems (also known as standard linearization) is a cornerstone for the analysis of such systems. Its simplicity, together with its…

We present the numerical solution of two-point boundary value problems for a third order linear PDE, representing a linear evolution in one space dimension. The difficulty of this problem is in the numerical imposition of the boundary…

Numerical Analysis · Mathematics 2016-10-19 Emine Kesici , Beatrice Pelloni , Tristan Pryer , David Smith

We establish local well-posedness for the higher-order nonlinear Schr\"odinger equation, formulated on the half-line. We consider the scenario of associated coefficients such that only one boundary condition is required, which is assumed to…

Analysis of PDEs · Mathematics 2023-05-30 Aykut Alkın , Dionyssios Mantzavinos , Türker Özsarı

In this paper, the Fokas-Lenells equations are investigated via bilinear approach. We bilinearize the unreduced Fokas-Lenells system, derive double Wronskian solutions, and then, by means of a reduction technique we obtain variety of…

Exactly Solvable and Integrable Systems · Physics 2021-10-01 Shu-zhi Liu , Jing Wang , Da-jun Zhang

In this article we consider the stability and damping problem for the 2D Boussinesq equations with partial dissipation near a two parameter family of stationary solutions which includes Couette flow and hydrostatic balance. In the first…

Analysis of PDEs · Mathematics 2020-04-20 Christian Zillinger