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Legendre padé approximants in π(mathcal{N})scatteringscattering

✍ Scribed by J. Engels; J. Fleischer

Book ID
112840137
Publisher
Springer-Verlag
Year
1974
Weight
755 KB
Volume
24
Category
Article
ISSN
0369-3546

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Correlation effects in the PPP model of
Correlation effects in the PPP model of alternant π-electronic systems: two-point Padé approximant approach
✍ J. ČÍŽek; A. Pellégatti; J. Paldus 📂 Article 📅 1975 🏛 John Wiley and Sons 🌐 English ⚖ 955 KB

## Abstract A general procedure, based on the two‐point Padé approximant technique, is formulated, enabling an interpolation of the low‐lying energy levels of the PPP (Pariser–Parr–Pople) Hamiltonian over the divergency gap separating the asymptotic perturbation expansions in both strongly and weak