Computing the sums of Rayleigh–Schrödinger series of perturbed self-adjoint operators
Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 47 (2007) no. 9, pp. 1494-1505 Cet article a éte moissonné depuis la source Math-Net.Ru

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A new method is proposed and validated for computing the sums of number series of discrete operators in perturbation theory with the required accuracy. Its efficiency is demonstrated through numerical computations.
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S. I. Kadchenko. Computing the sums of Rayleigh–Schrödinger series of perturbed self-adjoint operators. Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 47 (2007) no. 9, pp. 1494-1505. http://geodesic.mathdoc.fr/item/ZVMMF_2007_47_9_a4/

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