Singularity preserving spectral collocation method for nonlinear systems of fractional differential equations with the right-sided Caputo fractional derivative
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 …
difficult to tackle than the standard integer-order counterpart, and occasionally non …
Fast algorithms using orthogonal polynomials
We review recent advances in algorithms for quadrature, transforms, differential equations
and singular integral equations using orthogonal polynomials. Quadrature based on …
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 …
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 …
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 …
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 …
interval that achieves exponentially fast convergence for a variety of equations, including …
Computing equilibrium measures with power law kernels
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 …
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
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 …
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 …
derivatives and fractional integrals. A class of fractional Sturm-Liouville eigenvalue problems …
Orthogonal structure on a quadratic curve
Orthogonal polynomials on quadratic curves in the plane are studied. These include
orthogonal polynomials on ellipses, parabolas, hyperbolas and two lines. For an integral …
orthogonal polynomials on ellipses, parabolas, hyperbolas and two lines. For an integral …