Monte Carlo fPINNs: Deep learning method for forward and inverse problems involving high dimensional fractional partial differential equations

L Guo, H Wu, X Yu, T Zhou - Computer Methods in Applied Mechanics and …, 2022 - Elsevier
We introduce a sampling-based machine learning approach, Monte Carlo fractional physics-
informed neural networks (MC-fPINNs), for solving forward and inverse fractional partial …

Preconditioning technique based on sine transformation for nonlocal Helmholtz equations with fractional Laplacian

TY Li, F Chen, HW Sun, T Sun - Journal of Scientific Computing, 2023 - Springer
We propose two preconditioners based on the fast sine transformation for solving linear
systems with ill-conditioned multilevel Toeplitz structure. These matrices are generated by …

A Tikhonov regularization method for solving a backward time–space fractional diffusion problem

X Feng, M Zhao, Z Qian - Journal of Computational and Applied …, 2022 - Elsevier
In this paper, a backward problem for a time–space fractional diffusion equation is
considered, which is to determine the initial data from a noisy final data. To deal with this ill …

A note on parallel preconditioning for the all-at-once solution of Riesz fractional diffusion equations

XM Gu, YL Zhao, XL Zhao, B Carpentieri… - arXiv preprint arXiv …, 2020 - arxiv.org
The $ p $-step backwards difference formula (BDF) for solving the system of ODEs can result
in a kind of all-at-once linear systems, which are solved via the parallel-in-time …

Finite difference schemes for time-space fractional diffusion equations in one-and two-dimensions

Y Wang, M Cai - Communications on Applied Mathematics and …, 2023 - Springer
In this paper, finite difference schemes for solving time-space fractional diffusion equations
in one dimension and two dimensions are proposed. The temporal derivative is in the …

A finite difference method for elliptic equations with the variable-order fractional derivative

S Shi, Z Hao, R Du - Numerical Algorithms, 2024 - Springer
An efficient finite difference method for the multi-dimensional differential equation with
variable-order Riemann-Liouville derivative is studied. Firstly, we construct an efficient …

Fast implicit difference schemes for time‐space fractional diffusion equations with the integral fractional Laplacian

XM Gu, HW Sun, Y Zhang… - Mathematical Methods in …, 2021 - Wiley Online Library
In this paper, we develop two fast implicit difference schemes for solving a class of variable‐
coefficient time–space fractional diffusion equations with integral fractional Laplacian (IFL) …

Efficient Monte Carlo method for integral fractional Laplacian in multiple dimensions

C Sheng, B Su, C Xu - SIAM Journal on Numerical Analysis, 2023 - SIAM
In this paper, we develop a conditional Monte Carlo method for solving PDEs involving an
integral fractional Laplacian on any bounded domain in arbitrary dimensions. We first …

Well-posedness of space fractional Ginzburg–Landau equations involving the fractional Laplacian arising in a Bose–Einstein condensation and its kernel based …

H Mohebalizadeh, H Adibi, M Dehghan - Communications in Nonlinear …, 2023 - Elsevier
This study aims to investigate some theoretical results, numerical study and a real-word
application of the SFGLE, involving the fractional Laplacian. First, we describe the …

Analysis of a sinc-Galerkin Method for the Fractional Laplacian

H Antil, PW Dondl, L Striet - SIAM Journal on Numerical Analysis, 2023 - SIAM
We provide the convergence analysis for a-Galerkin method to solve the fractional Dirichlet
problem. This can be understood as a follow-up of [H. Antil, P. Dondl, and L. Striet, SIAM J …