Abstract
Three new procedures for the extrapolation of series coefficients from a given power series expansion are proposed. They are based on (i) a novel resummation identity, (ii) parametrised Euler transformation (pet) and (iii) a modifiedpet. Several examples taken from the Ising model series expansions, ferrimagnetic systems, etc., are illustrated. Apart from these applications, the higher order virial coefficients for hard spheres and hard discs have also been evaluated using the new techniques and these are compared with the estimates obtained by other methods. A satisfactory agreement is revealed between the two.
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Sangaranarayanan, M.V., Rangarajan, S.K. Perturbation expansions and series acceleration procedures: Part-II. Extrapolation techniques. Pramana - J. Phys 22, 407–419 (1984). https://doi.org/10.1007/BF02847107
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DOI: https://doi.org/10.1007/BF02847107