LeXInt: Package for exponential integrators employing Leja interpolation

Abstract

We present a publicly available software for exponential integrators that computes the φl(z)functions using polynomial interpolation. The interpolation method at Leja points have recently been shown to be competitive with the traditionally-used Krylov subspace method. The developed framework facilitates easy adaptation into any Python software package for time integration.

Keywords

• Time integration
• Numerical methods
• Exponential integrators
• Leja points
• Polynomial interpolation