Fractional centered difference scheme for high-dimensional integral fractional Laplacian
In this work we study the finite difference method for the fractional diffusion equation with
high-dimensional hyper-singular integral fractional Laplacian. We first propose a simple and …
high-dimensional hyper-singular integral fractional Laplacian. We first propose a simple and …
Discretised general fractional derivative
A generalised fractional derivative (the ψ-Caputo derivative) is studied. Generalisations of
standard discretisations are constructed for this derivative: L1, L1-2, L2-1 σ for derivatives of …
standard discretisations are constructed for this derivative: L1, L1-2, L2-1 σ for derivatives of …
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 …
integral fractional Laplacian on any bounded domain in arbitrary dimensions. We first …
Fast spectral Petrov-Galerkin method for fractional elliptic equations
In this work, we revisit the spectral Petrov-Galerkin method for fractional elliptic equations
with the general fractional operators. To prove the optimal convergence of the method, we …
with the general fractional operators. To prove the optimal convergence of the method, we …
Collocation methods for integral fractional Laplacian and fractional PDEs based on radial basis functions
We consider collocation methods for fractional elliptic equations with the integral fractional
Laplacian on general bounded domains using radial basis functions (RBFs). Leveraging the …
Laplacian on general bounded domains using radial basis functions (RBFs). Leveraging the …
Optimal error estimates of spectral Galerkin method for mixed diffusion equations
Z Hao - Calcolo, 2023 - Springer
We present a highly accurate and efficient spectral Galerkin method for the advection–
diffusion–reaction equations with fractional lower-order terms in one dimension. We first …
diffusion–reaction equations with fractional lower-order terms in one dimension. We first …
A novel and simple spectral method for nonlocal PDEs with the fractional Laplacian
We propose a novel and simple spectral method based on the semi-discrete Fourier
transforms to discretize the fractional Laplacian (− Δ) α 2. Numerical analysis and …
transforms to discretize the fractional Laplacian (− Δ) α 2. Numerical analysis and …
A simple and fast finite difference method for the integral fractional Laplacian of variable order
For the fractional Laplacian of variable order, an efficient and accurate numerical evaluation
in multi-dimension is a challenge for the nature of a singular integral. We propose a simple …
in multi-dimension is a challenge for the nature of a singular integral. We propose a simple …
A generalized fractional Laplacian
In this article we show that the fractional Laplacian in $ R^{2} $ can be factored into a
product of the divergence operator, a Riesz potential operator, and the gradient operator …
product of the divergence operator, a Riesz potential operator, and the gradient operator …
Numerical approximation of optimal convergence for fractional elliptic equations with additive fractional Gaussian noise
We study numerical approximation for one-dimensional stochastic elliptic equations with
integral fractional Laplacian and the additive Gaussian noise of power-law: 1/f^β noise and …
integral fractional Laplacian and the additive Gaussian noise of power-law: 1/f^β noise and …