This paper deals with the computation of the Lerch transcendent by means of the GaussLaguerre formula. An a priori estimate of the quadrature error, that allows to compute the number of quadrature nodes necessary to achieve an arbitrary precision, is derived. Exploiting the properties of the Gauss-Laguerre rule and the error estimate, a truncated approach is also considered. The algorithm used and its Matlab implementation are reported. The numerical examples confirm the reliability of this approach.
A fast and simple algorithm for the computation of the Lerch transcendent
Denich E.
;Novati P.
2024-01-01
Abstract
This paper deals with the computation of the Lerch transcendent by means of the GaussLaguerre formula. An a priori estimate of the quadrature error, that allows to compute the number of quadrature nodes necessary to achieve an arbitrary precision, is derived. Exploiting the properties of the Gauss-Laguerre rule and the error estimate, a truncated approach is also considered. The algorithm used and its Matlab implementation are reported. The numerical examples confirm the reliability of this approach.File in questo prodotto:
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