Hostname: page-component-848d4c4894-p2v8j Total loading time: 0 Render date: 2024-05-05T20:11:41.405Z Has data issue: false hasContentIssue false

The positive-definiteness of the complete symmetric functions of even order

Published online by Cambridge University Press:  24 October 2008

D. B. Hunter
Affiliation:
University of Bradford

Extract

An important role in the classical theory of symmetric functions of a real n-tuple x = (x1, x2, …, xn) is played by the complete symmetric functions or homogeneous product sums hr defined by the generating function

(see Littlewood (5), p. 82). In an earlier paper (4) I conjectured that h2r is positive definite. The main object of the present paper is to prove this conjecture in a rather sharper form.

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 1977

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

(1)Chisholm, J. S. R. Convergence properties of Padé approximants. Proceedings of a conference on Padé approximants and their applications. University of Kent, 1972.Google Scholar
(2)Flatto, L. and Gross, B.On the group of linear transformations leaving a polynomial invariant. Amer. Math. Monthly 74 (1967), 942947.CrossRefGoogle Scholar
(3)Gillespie, R. P.Partial differentiation (Edinburgh: Oliver and Boyd, 1951).Google Scholar
(4)Hunter, D. B.Some properties cf orthogonal polynomials. Math. Comp. 29 (1975), 559565.CrossRefGoogle Scholar
(5)Littlewood, D. E.A University algebra, 2nd edn. (London: Heinemann, 1958).Google Scholar
(6)Marcus, M. and Pierce, S.Symmetric positive definite multilinear functionals with a given automorphism. Pacific J. Math. 31 (1969), 119132.CrossRefGoogle Scholar
(7)Panik, M. J.Classical optimization: foundations and extensions (Amsterdam: North-Holland Publishing Co., 1976).Google Scholar
(8)Pierce, S.Orthogonal groups of positive definite multilinear functionals. Pacific J. Math. 33 (1970), 183189.CrossRefGoogle Scholar