Singularity preserving spectral collocation method for nonlinear systems of fractional differential equations with the right-sided Caputo fractional derivative

IG Ameen, MA Zaky, EH Doha - Journal of Computational and Applied …, 2021 - Elsevier
The numerical treatment of fractional differential equations in an accurate way is more
difficult to tackle than the standard integer-order counterpart, and occasionally non …

Fast algorithms using orthogonal polynomials

S Olver, RM Slevinsky, A Townsend - Acta Numerica, 2020 - cambridge.org
We review recent advances in algorithms for quadrature, transforms, differential equations
and singular integral equations using orthogonal polynomials. Quadrature based on …

[HTML][HTML] A contour method for time-fractional PDEs and an application to fractional viscoelastic beam equations

MJ Colbrook, LJ Ayton - Journal of Computational Physics, 2022 - Elsevier
We develop a rapid and accurate contour method for the solution of time-fractional PDEs.
The method inverts the Laplace transform via an optimised stable quadrature rule, suitable …

Computation of fractional derivatives of analytic functions

B Fornberg, C Piret - Journal of Scientific Computing, 2023 - Springer
It has recently been demonstrated that both regular derivatives and contour integrals of
analytic functions can be numerically evaluated to very high orders of accuracy utilizing only …

Solving nonlinear ODEs with the ultraspherical spectral method

O Qin, K Xu - IMA Journal of Numerical Analysis, 2024 - academic.oup.com
We extend the ultraspherical spectral method to solving nonlinear ordinary differential
equation (ODE) boundary value problems. Naive ultraspherical Newton implementations …

The numerical solution of fractional integral equations via orthogonal polynomials in fractional powers

T Pu, M Fasondini - Advances in Computational Mathematics, 2023 - Springer
We present a spectral method for one-sided linear fractional integral equations on a closed
interval that achieves exponentially fast convergence for a variety of equations, including …

Computing equilibrium measures with power law kernels

T Gutleb, J Carrillo, S Olver - Mathematics of Computation, 2022 - ams.org
We introduce a method to numerically compute equilibrium measures for problems with
attractive-repulsive power law kernels of the form $ K (xy)=\frac {| xy|^\alpha}{\alpha}-\frac …

Symmetry Breaking in Fractional Nonlinear Schrödinger and Soliton Dynamics in Complex Ginzburg-Landau Models

P Li, BA Malomed, D Mihalache - Fractional Dispersive Models and …, 2024 - Springer
In this chapter we review some recent results for fractional nonlinear Schrödinger (FNLS)
and fractional complex Ginzburg-Landau (FCGL) models. In particular, one-and two …

Integral representations of Eta functions and fractional calculus

S Sedaghat, F Marcellán - Numerical Algorithms, 2024 - Springer
In this contribution we deal with Eta functions and their representations as fractional
derivatives and fractional integrals. A class of fractional Sturm-Liouville eigenvalue problems …

Orthogonal structure on a quadratic curve

S Olver, Y Xu - IMA Journal of Numerical Analysis, 2021 - academic.oup.com
Orthogonal polynomials on quadratic curves in the plane are studied. These include
orthogonal polynomials on ellipses, parabolas, hyperbolas and two lines. For an integral …