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Franz Neumann's integral of 1848

Published online by Cambridge University Press:  24 October 2008

E. R. Love
Affiliation:
University of Melbourne

Abstract

Three generalizations of Neumann's integral connecting the two kinds of Legendre function are obtained. They are not subject to restrictions that some parameter be integral, as the original formula and various known extensions of it all appear to be. These known extensions are exhibited as quite particular cases of the chief generalization obtained; and even when this generalization is specialized to the ‘unassociated’ Legendre functions of non-integral order it still seems to be new. Generalizations of Rodrigues's formula and of the orthogonality property are auxiliary results involved.

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 1965

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References

REFERENCES

(1)Barnes, E. W.On generalized Legendre functions. Quart. J. Math. 39 (1908), 97204.Google Scholar
(2)Copson, E. T.Theory of functions (Oxford, 1935).Google Scholar
(3)Erdélyi, A.Higher transcendental functions, vol. i (McGraw-Hill; New York, 1953).Google Scholar
(4)Erdélyi, A.Tables of integral transforms, vol. ii (McGraw-Hill; New York, 1954).Google Scholar
(5)Gormley, P. G.A generalization of Neumann's formula for Qn(z). J. London Math. Soc. 9 (1934), 149152.CrossRefGoogle Scholar
(6)Hobson, E. W.Spherical and ellipsoidal harmonics (Cambridge, 1931).Google Scholar
(7)Neumann, F.Entwicklung der…reziproken Entfernung zweier Punkte in Reihen.… J. Reine Angew. Math. 37 (1848), 2150.Google Scholar
(8)Robin, L.Fonctions sphériques de Legendre et fonctions sphéroidales, vol. i (Gauthier-Villars; Paris, 1957).Google Scholar
(9)Robin, L.Fonctions sphéiques de Legendre et fonctions sphéroidales, vol. ii (Gauthier-Villars; Paris, 1958).Google Scholar
(10)Szëgo, G.Orthogonal polynomials (American Mathematical Society, 1939).Google Scholar
(11)Wrinch, Dorothy. On some integrals involving Legendre polynomials. Philos. Mag. 7 (10), 1930, 10371043.CrossRefGoogle Scholar