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 Warren F Perger

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Bibliometrics: publication history
Average citations per article3.00
Citation Count9
Publication count3
Publication years1992-2001
Available for download1
Average downloads per article999.00
Downloads (cumulative)999
Downloads (12 Months)26
Downloads (6 Weeks)5
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1
January 2001 Computing in Science and Engineering: Volume 3 Issue 1, January 1, 2001
Publisher: IEEE Educational Activities Department
Bibliometrics:
Citation Count: 0

This article describes ISNAP, a program for calculating atomic properties that uses an integrated symbolic and numerical approach for arbitrary excitations from closed-shell atoms. This program generates transition matrix elements and energy formulas up to third-order perturbation via the symbolic programming language Mathematica.

2 published by ACM
September 1992 ACM Transactions on Mathematical Software (TOMS): Volume 18 Issue 3, Sept. 1992
Publisher: ACM
Bibliometrics:
Citation Count: 4
Downloads (6 Weeks): 5,   Downloads (12 Months): 26,   Downloads (Overall): 999

Full text available: PDFPDF
A numerical evaluator for the confluent hypergeometric function for complex arguments with large magnitudes using a direct summation of Kummer's series is presented. Extended precision subroutines using large arrays to accumulate a single numerator and denominator are ultimately used in a single division to arrive at the final result. The ...
Keywords: evaluator, confluent hypergeometric, special functions

3
March 1992 Journal of Computational and Applied Mathematics: Volume 39 Issue 2, March 30, 1992
Publisher: Elsevier Science Publishers B. V.
Bibliometrics:
Citation Count: 5

Keywords: Coulomb functions, numerical evaluation, performance evaluation, Bessel functions, Hankel functions, confluent hypergeometric function



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