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Using modified Riemann-Liouville derivative, the Exp function and Exponential rational function methods are implemented to solve the time-fractional generalized Burgers-Fisher equation (TF-GBF). The TF-GBF is transformed into a nonlinear…

Exactly Solvable and Integrable Systems · Physics 2020-08-05 Ramya Selvaraj , Swaminathan Venkatraman

We propose new type of $q$-diffusive heat equation with nonsymmetric $q$-extension of the diffusion term. Written in relative gradient variables this system appears as the $q$- viscous Burgers' equation. Exact solutions of this equation in…

Exactly Solvable and Integrable Systems · Physics 2017-07-07 Sengul Nalci Tumer , Oktay K. Pashaev

The Moyal *-deformed noncommutative version of Burgers' equation is considered. Using the *-analog of the Cole-Hopf transformation, the linearization of the model in terms of the linear heat equation is found. Noncommutative q-deformations…

High Energy Physics - Theory · Physics 2007-05-23 L. Martina , O. K. Pashaev

We introduce the uniqueness, existence, $L_p$-regularity, and maximal H\"older regularity of the solution to semilinear stochastic partial differential equation driven by a multiplicative space-time white noise: $$ u_t = au_{xx} + bu_{x} +…

Probability · Mathematics 2022-05-24 Beom-Seok Han

In this paper we consider a class of Burgers equation. We propose a new method of investigation for existence of classical solutions.

General Mathematics · Mathematics 2021-01-20 Svetlin G. Georgiev , Gal Davidi

In this article, we study the fractional Br\'{e}zis-Nirenberg type problem on whole domain $\mathbb{R}^N$ associated with the fractional $p$-Laplace operator. To be precise, we want to study the following problem: \begin{equation*}…

Analysis of PDEs · Mathematics 2024-06-11 Rohit Kumar , Abhishek Sarkar

We extend the Barles-Perthame procedure of semi-relaxed limits of viscosity solutions of Hamilton-Jacobi equations of the type f - lambda H f = h. The convergence result allows for equations on a `converging sequence of spaces' as well as…

Functional Analysis · Mathematics 2019-05-24 Richard C. Kraaij

We develop a numerical method for the Westervelt equation, an important equation in nonlinear acoustics, in the form where the attenuation is represented by a class of non-local in time operators. A semi-discretisation in time based on the…

Numerical Analysis · Mathematics 2024-01-23 Katherine Baker , Lehel Banjai , Mariya Ptashnyk

One of the central difficulties in the quantization of the gravitational interactions is that they are described by a set of constraints. The standard strategy for dealing with the problem is the Dirac quantization procedure, which leads to…

General Relativity and Quantum Cosmology · Physics 2022-06-15 Grzegorz Czelusta , Jakub Mielczarek

We consider the dispersive logarithmic Schr{\"o}dinger equation in a semi-classical scaling. We extend the results about the large time behaviour of the solution (dispersion faster than usual with an additional logarithmic factor,…

Analysis of PDEs · Mathematics 2021-03-24 Guillaume Ferriere

A high-accuracy time discretization is discussed to numerically solve the nonlinear fractional diffusion equation forced by a space-time white noise. The main purpose of this paper is to improve the temporal convergence rate by modifying…

Numerical Analysis · Mathematics 2021-05-04 Xing Liu

The Riemann problem for the discrete conservation law $2 \dot{u}_n + u^2_{n+1} - u^2_{n-1} = 0$ is classified using Whitham modulation theory, a quasi-continuum approximation, and numerical simulations. A surprisingly elaborate set of…

Pattern Formation and Solitons · Physics 2025-05-21 Patrick Sprenger , Christopher Chong , Emmanuel Okyere , Michael Herrmann , P. G. Kevrekidis , Mark A. Hoefer

We establish that the initial value problem for a generalised Burgers equation considered in part I of this paper, is well-posed. We also establish several qualitative properties of solutions to the initial value problem utilised in part I…

Analysis of PDEs · Mathematics 2022-09-13 John Christopher Meyer , David John Needham

This paper considers a class of non-local equations that are weakly dispersive perturbations of the inviscid Burgers equation, which includes the Fornberg-Whitham equation as a special case. We precise the known results on finite time…

Analysis of PDEs · Mathematics 2026-02-27 Jean-Claude Saut , Yuexun Wang

In this article, we study the generalised Kudryashov method for the time fractional generalized Burgers-Fisher equation (GBF). Using traveling wave transformation, the time fractional GBF is transformed to nonlinear ordinary differential…

Exactly Solvable and Integrable Systems · Physics 2020-03-12 Ramya Selvaraj , V. Swaminathan , A. Durga Devi , K. Krishnakumar

We present a general framework for the rigorous numerical analysis of time-fractional nonlinear parabolic partial differential equations, with a fractional derivative of order $\alpha\in(0,1)$ in time. The framework relies on three…

Numerical Analysis · Mathematics 2017-12-05 Bangti Jin , Buyang Li , Zhi Zhou

We establish a Schauder-type estimate for general local and non-local linear parabolic system $$\partial_tu+\mathbf{L}_su=\Lambda^\gamma f+g$$ in $(0,\infty)\times\mathbb{R}^d$ where $\Lambda=(-\Delta)^{\frac{1}{2}}$, $0<\gamma\leq s$,…

Analysis of PDEs · Mathematics 2024-07-09 Ke Chen , Ruilin Hu , Quoc-Hung Nguyen

This paper is devoted to the study of uniform $W^{1,\frac{np}{n-p}}$- and $W^{2,p}$-estimates for viscosity solutions to fully nonlinear, uniformly elliptic, periodic homogenization problems, up to boundaries, subject to Dirichlet boundary…

Analysis of PDEs · Mathematics 2022-01-19 Sunghan Kim

We consider the multidimensional generalised stochastic Burgers equation in the space-periodic setting: $ \partial \mathbf{u}/\partial t+$ $(\nabla f(\mathbf{u}) \cdot \nabla)$ $\mathbf{u} -\nu \Delta \mathbf{u}=$ $\nabla \eta,\quad t \geq…

Analysis of PDEs · Mathematics 2015-10-07 Alexandre Boritchev

This paper presents an efficient numerical technique for solving multi-dimensional fractional optimal control problems using fractional-order generalized Bernoulli wavelets. The numerical results obtained by this method have been compared…

Optimization and Control · Mathematics 2023-10-13 Akanksha Singh , S. Saha Ray
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