High-order differential approximants

  • Authors:
  • M. A. H. Khan

  • Affiliations:
  • Department of Mathematics, BUET, Dhaka 1000, Bangladesh

  • Venue:
  • Journal of Computational and Applied Mathematics
  • Year:
  • 2002

Quantified Score

Hi-index 7.29

Visualization

Abstract

We introduce a new form of differential approximant for the summation of power series. The method is a special type of Padé-Hermite approximant. It consists of a high-order linear differential equation with polynomial coefficients that is satisfied approximately by the partial sum of the power series. This method is able to reproduce the polylogarithmic functions exactly. Numerical evidence suggests that this is currently one of the best methods of singularity analysis for many problems.