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Darboux functions a...
Darboux functions and power series expansions with examples from isoelectronic sequences
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- Brändas, Erkki (author)
- Uppsala universitet,Matematisk-naturvetenskapliga fakulteten
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- Goscinski, Osvaldo (author)
- Uppsala universitet,Matematisk-naturvetenskapliga fakulteten
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(creator_code:org_t)
- 2009-06-18
- 1972
- English.
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In: International Journal of Quantum Chemistry. - : Wiley. - 0020-7608 .- 1097-461X. ; 6:S6, s. 59-72
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- A procedure for summing a power series based on a Darboux function ansatz is developed. It involves computation of poles and residues of logarithmic derivatives using rational functions. Applications to the helium isoelectronic sequence condense the power series expansion (˜ 40 coefficients) to a few-parameter formula, which exhibits the singularity determining the radius of convergence. Accurate extrapolations of electron affinities and shielding factors are obtained.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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